ISHII Kunikazu

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Profile and Settings

• Name (Japanese)

  Ishii

• Name (Kana)

  Kunikazu

Degree

• Doctor(Science), Tokyo Metropolitan University

Research Areas

• Natural sciences, Semiconductors, optical and atomic physics

Education

• 2002, Tokyo Metropolitan University, Graduate School of Science, Department of Physics, Japan
• 2002, Tokyo Metropolitan University, Graduate School, Division of Natural Science, Department of Physics

Association Memberships

• 日本物理学会
• 原子衝突研究協会
• タンデム加速器及びその周辺技術の研究会

Ⅱ．研究活動実績

Published Papers

• Refereed, Nucl. Instr. Meth. B, Inlet MeV ion beam dependence of transmission property for a glass capillary filled with He gas, M. Asamura; Y. Fukunaga; K. Ishii; H. Ogawa, 2019, 460, 220, 223, Scientific journal
• Refereed, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Elsevier B.V., Number distribution of emitted electrons by MeV H+ impact on carbon, H. Ogawa; Y. Koyanagi; N. Hongo; K. Ishii; T. Kaneko, The statistical distributions of the number of the forward- and backward-emitted secondary electrons (SE's) from a thin carbon foil have been measured in coincidence with foil-transmitted H+ ions of 0.5–3.0 MeV in every 0.5 MeV step. The measured SE energy spectra were fitted by assuming a Pólya distribution for the simultaneous n-SE emission probabilities. For our previous data with a couple of the carbon foils with different thicknesses, a similar analysis has been carried out. As a result, it was found that the measured spectra could be reproduced as well as by an analysis without placing any restriction on the emission probabilities both for the forward and backward SE emission. The obtained b-parameter of the Pólya distribution, which is a measure of the deviation from a Poisson distribution due to the cascade multiplication by high energy internal SE's, increases monotonically with the incident energy of proton beams. On the other hand, a clear foil-thickness dependence is not observed for the b-parameter. A theoretical model which could reproduced the magnitude of the b-parameter for the SE energy spectra obtained with thick Au, Cu and Al targets is found to overestimates our values for thin carbon foils significantly. Another model calculation is found to reproduce our b-values very well., 01 Sep. 2017, 406, 487, 490, Scientific journal, 10.1016/j.nimb.2017.02.023

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• Refereed, Journal of Physics: Conference Series, MeV ion beam extraction into air with a glass capillary filled with He, ISHII Kunikazu; M. Asamura; K. Ishii; H. Ogawa, 2017, 875, 092012
• Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Forward-backward correlated secondary electron emission depending on the emergence angle of 1 MeV/u light ions, H. Ogawa; S. Amano; K. Ishii; T. Kaneko, The statistical distributions of the number of forward- and backward-emitted secondary electrons (SE's) from a thin carbon foil have been measured simultaneously in coincidence with foil-transmitted H-1(+), He-4(2+) and Li-6(3+) at a fixed velocity of 1 MeV/u. The emergence angles of the projectiles, theta(em), were varied from 0 to 2 [mrad] for H+ and from 0 to 1 [mrad] for He2+ and Li3+ ions. Irrespective of ion species, measured total SE yields, that is, the average number of simultaneous emitted electrons per projectile, increase with increasing theta(em) both in the forward and backward directions. This trend is consistent with the calculated theta(em)-dependent energy losses of protons penetrating a thin carbon foil. As for the forward-or backward-emitted SE yields, we have obtained a negative forward-backward(F-B) correlation, except for the theta(em) = 0.0 [mrad] emergence of H+ projectiles where a positive correlation has been observed. The negative F-B correlation becomes prominent with increasing the atomic number of the projectile, Z(p). In addition, this correlation appears to become slightly stronger with increasing theta(em). The observed F-B correlation and its Z(p) - and theta(em)-dependences are interpreted from the point of view of production of high energy internal SE's. (C) 2014 Elsevier B.V. All rights reserved., Jul. 2015, 354, 96, 99, Scientific journal, 10.1016/j.nimb.2014.09.025

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Measurements of an ion beam diameter extracted into air through a large-bore metal capillary, Y. Hirano; M. Umigishi; K. Ishii; H. Ogawa, To extract an ion beam into air, the technique using a single macro-capillary has been paid attention. We have expanded the bore of the metal capillary up to 500 mu m circle divide inlet diameter to increase the beam intensity and have measured the intensity distributions of the extracted 3 MeV proton beam. Furthermore, we have tilted the capillary angle and measured the intensity distributions of the ion beam. In this article, we will present the experimental results together with the simulation which takes the tilt angles of the capillary into account. (C) 2014 Elsevier B.V. All rights reserved., Jul. 2015, 354, 67, 70, Scientific journal, 10.1016/j.nimb.2014.11.008

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Energy distribution of an ion beam extracted into air with a large bore metal capillary, Mika Umigishi; Yoshimi Hirano; Kunikazu Ishii; Hidemi Ogawa, In order to clarify the transmission properties of an ion beam extracted with a large bore metal capillary into air, we measured the energy distributions of extracted 4.0 MeV alpha particles using a pinhole slit. The metal capillary we used is a conventional injection needle with 500 mu m inner diameter. As a result, we obtained two-dimensional intensity distributions of the ion beam extracted into air with this large bore metal capillary and the energy spectra at each position. We discuss the result of two-dimensional intensity distributions and report the difference of the energy spectra at the center part and at the edge. (C) 2014 Elsevier B.V. All rights reserved., Jul. 2015, 354, 64, 66, Scientific journal, 10.1016/j.nimb.2014.11.054

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• Not Refereed, Journal of Physics B: Atomic, Molecular and Optical Physics, Institute of Physics Publishing, Forward-backward correlated secondary-electron emission depending on the angle of emergence of protons transmitted through a thin carbon foil, H. Ogawa; K. Sorai; S. Amano; K. Ishii; T. Kaneko, The statistical distributions of the secondary electrons (SEs) emitted forward and backward from a thin carbon foil have been measured simultaneously, in coincidence with foil-transmitted protons of 1.0 and 2.5 MeV, as a function of the angle of emergence, θem, of the protons. Irrespective of the incident energy, the measured SE yields increase with increasing angle of emergence in both the forward and the backward directions. As for the forward-backward correlation of the SE emission, the forward- and backward-emitted SE yields induced by 2.5 MeV protons increase gradually with increasing number of SEs emitted in the opposite directions. This positive correlation becomes slightly more pronounced with increasing angle of emergence. On the other hand, for 1.0 MeV, a positive correlation observed at θem = 0 mrad changes to a negative one at θem = 1.0 and 2.0 mrad. © 2014 IOP Publishing Ltd., 28 Apr. 2014, 47, 8, 085201, 10.1088/0953-4075/47/8/085201

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• Not Refereed, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Elsevier B.V., Measurements of an ion beam diameter extracted into air through a glass capillary, Natsuko Fujita; Atsuko Yamaki; Kunikazu Ishii; Hidemi Ogawa, To establish techniques for in-air materials analysis using a glass capillary, we studied the beam distribution extracted in air as a function of the distance between the exit of the capillary and the target. We measured three-dimensional intensity distributions of the extracted beams, and compared the observed results with the model calculation. The comparison showed that the glass capillary technique is designed to reduce a divergence of the beam extracted into the air by a beam-focusing effect. © 2013 Published by Elsevier B.V., 15 Nov. 2013, 315, 332, 335, Scientific journal, 10.1016/j.nimb.2013.05.079

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Secondary electron emission from a thin carbon foil induced by H+, He2+ and Li3+ at fixed velocity of 1 MeV/u, H. Ogawa; K. Sorai; S. Amano; K. Ishii; T. Kaneko, The statistical distributions of the number of forward- and backward-emitted secondary electrons (SE's) from a thin carbon foil have been measured simultaneously in coincidence with foil-transmitted H+, He2+ and Li3+ ions of 1 MeV/u in order to examine the forward-backward correlation of the SE emission (refer to as 'FB correlation' hereafter). With these projectiles, we have also measured the energy spectrum of SEs emitted from another carbon foil of similar thickness in the direction around 0 degrees with respect to the incident beams. From the emission statistics data, it is found that both of the inclusive forward and backward SE yields divided by the square of the projectile atomic number (Z(p)) decrease with increasing Z(p). This trend is qualitatively consistent with previous works by other authors. On the other hand, it has been certified from the energy spectra that the yields of binary electron scale well with Z(p)(2). As for the FB correlation, the forward- or backward-emitted SE yield decreases gradually with increasing the number of SEs emitted in the opposite directions. This so-called 'negative FB correlation' appears to be pronounced for He2+ and Li3+ ions compared with that for H+ ions. Since low energy internal SEs do not contribute to the FB correlation, the observed Z(p)-dependent FB correlation seems to be consistent with the well Z(p)(2)-scaled production of high energy internal SEs and the decrease of the inclusive forward and backward SE yields with respect to this scaling. (C) 2013 Elsevier B.V. All rights reserved., Nov. 2013, 315, 291, 294, Scientific journal, 10.1016/j.nimb.2013.03.024

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• Not Refereed, PHYSICA SCRIPTA, IOP PUBLISHING LTD, Effective air thickness in a glass capillary for the in-air material analysis, Natsuko Fujita; Kunikazu Ishii; Hidemi Ogawa, In order to establish in-air material analysis techniques with a glass capillary, we have measured energy distributions of extracted alpha particles in air using the glass capillary. We have estimated the effective air thickness in the glass capillary and found it to be compatible with a simple calculation., Sep. 2013, T156, Scientific journal, 10.1088/0031-8949/2013/T156/014059

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• Refereed, Physica Scripta, Effective air thickness in a glass capillary for the in-air material analysis, Natsuko Fujita; Kunikazu Ishii; Hidemi Ogawa, In order to establish in-air material analysis techniques with a glass capillary, we have measured energy distributions of extracted alpha particles in air using the glass capillary. We have estimated the effective air thickness in the glass capillary and found it to be compatible with a simple calculation. © 2013 The Royal Swedish Academy of Sciences., 2013, T156, International conference proceedings, 10.1088/0031-8949/2013/T156/014059

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• Not Refereed, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, IOP PUBLISHING LTD, Correlated forward-backward electron emission from a thin carbon foil induced by frozen-charged and charge-changed hydrogen penetration, H. Ogawa; A. Shimada; M. Kiuchi; M. Hagihara; K. Ishii; T. Kaneko, Using 2.5-3.5 MeV H-0 and H+ beams penetrating a thin carbon foil, the two-dimensional probabilities of the secondary electron (SE) emission have been investigated as a function of the number of SEs emitted simultaneously in the forward and backward directions. Depending on the charge state of the projectiles in the foil, these probabilities exhibit quite different distributions. The observed difference between the H-0 and H+ penetration can be reproduced quite well by a Monte Carlo simulation assuming the frozen charge state of the projectiles in the foil. Furthermore, another simulation elucidates that a small amount for example only 1% of charge-changed H-0 projectiles change the forward-backward correlation of the SE emission significantly from that induced by frozen-charged ones., May 2012, 45, 9, 09501, Scientific journal, 10.1088/0953-4075/45/9/095201

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• Refereed, XXVII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC 2011), PTS 1-15, IOP PUBLISHING LTD, Development of 4 pi detector to clarify fragmentation dynamics of molecule in collisions with highly charged ions in ultra low energy region, M. Okano; K. Ishii; H. Ogawa, We have developed a new detector to study collision dynamics between highly charged ion and molecule in ultra low energy region (<= 1 keV/u). The outline of this detector is a recoil momentum spectroscopy in semispherical energy analyzer. At the conference, we will present progress report of the developments of this detector including TOF spectra of recoil ions in coincidence with HCI after collisions., 2012, 388, International conference proceedings, 10.1088/1742-6596/388/10/102015

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• Not Refereed, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, IOP PUBLISHING LTD, Role of loss electrons on forward-backward correlation in electron emission from a thin carbon foil by hydrogen irradiation, H. Ogawa; A. Shimada; M. Kiuchi; M. Hagihara; K. Ishii; T. Kaneko, The number distributions of simultaneously emitted secondary electrons (SEs) from a thin carbon foil have been measured for the incidence of neutral hydrogen beams of 0.5-3.5 MeV together with foil-transmitted protons in order to examine the contribution of the loss electrons to the correlation between the forward and backward SE emission. The forward (backward) SE yields gamma(F) (gamma(B)), that is, the mean numbers of the forward-emitted (backward-emitted) electrons per projectile have been evaluated as a function of the number of backward-emitted (forward-emitted) SEs, n(B) (n(F)). At 1.0-2.5 MeV, gamma(F) (gamma(B)) decreases with increasing n(B) (n(F)). On the other hand, the dependence of gamma(F) (gamma(B)) on n(B) (n(F)) becomes slightly complicated at 3.0 and 3.5 MeV. A Monte Carlo simulation can well reproduce the observed incident energy dependence of the forward-backward correlation, where the loss electrons are found to play a crucial role., Aug. 2011, 44, 16, Scientific journal, 10.1088/0953-4075/44/16/165206

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• Not Refereed, PHYSICA SCRIPTA, IOP PUBLISHING LTD, Transmission properties of glass capillaries for MeV proton and alpha particles, N. Fujita; K. Ishii; H. Ogawa, In order to clarify the transmission properties of an ion beam extracted with glass capillaries into air, we measured the energy distributions of extracted protons and alpha particles using two kinds of glass capillaries. We observed the 'core' and 'halo' components in the energy spectra and obtained intensity distributions for both components as a function of the tilted angle of the glass capillary. Transmission properties of ion beams extracted with the glass capillaries have been discussed., Jun. 2011, T144, 014033, Scientific journal, 10.1088/0031-8949/2011/T144/014033

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Development of two-dimensional mapping technique by in-air-PIXE with metal capillary, N. Fujita; K. Ishii; H. Ogawa, We have developed the two-dimensional mapping technique with in-air-PIXE (2D-PIXE) using a metal capillary as a guide to extract ion beam to air. The metal capillary is the conventional injection needle with a 2001 mu m inside diameter. For the target which is the character made of the copper wires on aluminum basement, 2D-PIXE measurements were performed by irradiating 3 MeV proton beam. As a result, the character was tend to be restored clearly by this method. We discuss about the result of the two-dimensional map from a viewpoint of the signal-to-noise ratio and the resolution. This technique is expected to be applicable to various fields such as biology, nano-technology, archeology and so on. (c) 2010 Elsevier B.V. All rights reserved., May 2011, 269, 9, 1023, 1025, Scientific journal, 10.1016/j.nimb.2010.11.065

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Development of an in-air RBS technique using a metal capillary, Kunikazu Ishii; Natsuko Fujita; Hidemi Ogawa, We have developed a simple Rutherford backscattering spectroscopic (RBS) method to analyze sample depth profiles in air. To avoid excessive energy loss of projectile ions in air, we have used a 3 MeV proton beam extracted into air with a metal capillary. Using this capillary, we were able to extract a sufficiently large proton beam current to perform in-air RBS and in-air PIXE without requiring any window, such as a thin film, between a vacuum chamber and air. We have validated our technique by analyzing the depth profiles for Au foils of various thicknesses, 0.25, 0.75, and 2.5 mu m. A comparison of the experimental results with a simple theoretical calculation indicates that this technique is useful for analyzing the depth profile of any specimen in air. (C) 2010 Elsevier B.V. All rights reserved., May 2011, 269, 9, 1026, 1028, Scientific journal, 10.1016/j.nimb.2010.11.066

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Secondary electron emission from a thin carbon foil induced by equi-velocity protons and electrons of 0.5-3.5 MeV/u, H. Ogawa; A. Shimada; Y. Inoue; K. Ishii; T. Kaneko, The statistical distributions of the number of simultaneously forward-emitted secondary electrons (SEs) from a thin carbon foil have been measured with H-0 and H+ projectiles of 0.5-3.5 MeV in coincidence with the foil-transmitted protons, irrespective of projectile incident charge state. From these results, the probabilities of the simultaneous emission of n electrons and the SE yields by loss electrons have been evaluated. At energies of 2.5-3.5 MeV, the obtained emission probabilities and the SE yields induced by loss electrons are larger than the corresponding ones by protons of the same velocity. Furthermore, the material parameter is found to be almost constant and is slightly larger than that for the protons. On the other hand, the forward SE yields by loss electrons is decreasing to zero with decreasing the incident energy. This behavior is consistent with the range-energy relation of electrons in carbon. (c) 2010 Elsevier B.V. All rights reserved., May 2011, 269, 9, 968, 971, Scientific journal, 10.1016/j.nimb.2010.12.047

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• Refereed, Physica Scripta T, Transmission properties of glass capillaries for MeV proton and alpha particles, N. Fujita; K. Ishii; H. Ogawa, In order to clarify the transmission properties of an ion beam extracted with glass capillaries into air, we measured the energy distributions of extracted protons and alpha particles using two kinds of glass capillaries. We observed the 'core' and 'halo' components in the energy spectra and obtained intensity distributions for both components as a function of the tilted angle of the glass capillary. Transmission properties of ion beams extracted with the glass capillaries have been discussed. © 2011 The Royal Swedish Academy of Sciences., 2011, T144, International conference proceedings, 10.1088/0031-8949/2011/T144/014033

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• Refereed, Physical Review A - Atomic, Molecular, and Optical Physics, Forward-backward correlation and its incident energy dependence in secondary-electron emission from a thin carbon foil upon proton penetration, H. Ogawa; A. Shimada; M. Kiuchi; M. Hagihara; Y. Inoue; K. Ishii; T. Kaneko, The statistical distributions of the number of simultaneously emitted secondary electrons (SEs) from a carbon foil have been measured with proton beams of 0.5-3.5 MeV. In this experiment, the forward- and backward-emitted SEs have been measured simultaneously with foil-transmitted protons using a digitizer. As a method to examine how the forward and backward SE emissions correlate to each other, the forward (backward) SE yields γF (γB), that is, the mean number of the forward-emitted (backward-emitted) electrons per projectile, have been evaluated as a function of the number of the backward-emitted (forward-emitted) SEs, nB (nF). At higher incident energies, γF (γB) increases with increasing nB (nF). With decreasing incident energy, this so-called positive correlation becomes weaker and then changes to negative at the lowest incident energy. Although measurements using a slightly thicker foil exhibit just the same trend, the correlation changes from positive to negative at the higher incident energy. For a given foil thickness, the range of the produced binary electron and hence the incident proton energy seems to determine the sign of the correlation. A simple Monte Carlo simulation for the forward and backward SE emission in the present experimental condition can qualitatively reproduce the observed incident-energy dependence of the positive correlation but cannot reproduce the negative one observed at the lower incident energies. © 2010 The American Physical Society., 29 Jul. 2010, 82, 1, Scientific journal, 10.1103/PhysRevA.82.012902

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• Not Refereed, PHYSICAL REVIEW A, AMER PHYSICAL SOC, Forward-backward correlation and its incident energy dependence in secondary-electron emission from a thin carbon foil upon proton penetration, H. Ogawa; A. Shimada; M. Kiuchi; M. Hagihara; Y. Inoue; K. Ishii; T. Kaneko, The statistical distributions of the number of simultaneously emitted secondary electrons (SEs) from a carbon foil have been measured with proton beams of 0.5-3.5 MeV. In this experiment, the forward- and backward-emitted SEs have been measured simultaneously with foil-transmitted protons using a digitizer. As a method to examine how the forward and backward SE emissions correlate to each other, the forward (backward) SE yields gamma F (gamma B), that is, the mean number of the forward-emitted (backward-emitted) electrons per projectile, have been evaluated as a function of the number of the backward-emitted (forward-emitted) SEs, n(B) (n(F)). At higher incident energies, gamma F (gamma B) increases with increasing n(B) (n(F)). With decreasing incident energy, this so-called positive correlation becomes weaker and then changes to negative at the lowest incident energy. Although measurements using a slightly thicker foil exhibit just the same trend, the correlation changes from positive to negative at the higher incident energy. For a given foil thickness, the range of the produced binary electron and hence the incident proton energy seems to determine the sign of the correlation. A simple Monte Carlo simulation for the forward and backward SE emission in the present experimental condition can qualitatively reproduce the observed incident-energy dependence of the positive correlation but cannot reproduce the negative one observed at the lower incident energies., Jul. 2010, 82, 1, 012902, Scientific journal, 10.1103/PhysRevA.82.012902

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• Not Refereed, PLASMA SCIENCE & TECHNOLOGY, IOP PUBLISHING LTD, Modified Classical Over Barrier Model for Multi-Charged Ion in Collisions with Multiple Electron Target at Energies Below 1 keV/u, K. Ishii; K. Okuno, Charge transfer cross sections for Krq+ with Ne are calculated quantitatively by using modified classical over barrier model in order to clarify energy dependence of charge transfer cross sections in low energy region. Essential of this model is taking the induced dipole potential into consideration. As a result, this calculation can reproduce systematic energy dependence of experimental results. This suggests that the bending trajectory of the projectile due to an induced dipole potential should be considered to describe pictures of collisions at low energy regime below 1 keV/u., Jun. 2010, 12, 3, 369, 371, Scientific journal, 10.1088/1009-0630/12/3/24

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• Not Refereed, PLASMA SCIENCE & TECHNOLOGY, IOP PUBLISHING LTD, Recoil Momentum of Target Ions in Collisions of Ar6++CO2 at Energies Below 300 eV/u, Y. Inoue; K. Ishii; H. Ogawa, The collision dynamics and fragmentation process of molecule by highly charged ion impact for single electron capture processes at the low energies below 1 keV/u were studied. The collision energy dependence of the recoil momentum was obtained experimentally and compared it with those calculated by a theoretical model using a deflection function with polarization potential. A fairly good agreement between the measured and calculated results was reached. This suggests that the polarization potential plays a crucial role in the low-energy region., Jun. 2010, 12, 3, 361, 363, Scientific journal, 10.1088/1009-0630/12/3/22

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• Refereed, Journal of Physics: Conference Series, Institute of Physics Publishing, Molecular fragmentation in collisions of Multiply Charged Ion with diatomic molecule at energies below 1 keV/u, Y. Inoue; K. Ishii; H. Ogawa, To clarify collision dynamics of the molecular fragmentation involving the charge-asymmetry effects in collisions of slow Multiply Charged Ions (MCIs) with molecules, we have measured the recoil momentum of non-dissociated molecular ions and the branching ratio of molecular fragmentation for single- and multiple-electron capture collisions of MCIs with the diatomic molecule at collision energies below 1 keV/u. The experimental energy dependence of the recoil momentum of molecular ions was in good agreement with the theoretical dependence obtained using the polarization potential at energies below 100 eV/u. The detailed discussions involving experimental results for branching ratio will be presented at the conference., 24 Dec. 2009, 194, 10, International conference proceedings, 10.1088/1742-6596/194/10/102011

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Forward-backward correlation in secondary electron emission from a thin carbon foil by frozen-charged H+ and H-0 penetration, H. Ogawa; M. Sonoda; Y. Inoue; K. Ishii; T. Kaneko, The statistical distributions of the number of simultaneously emitted secondary electrons (SE's) from a thin carbon foil have been measured with frozen-charged H-0 and H+ projectiles of 2.5-3.5 MeV. In this experiment, the forward- and backward-emitted electrons have been measured simultaneously together with foil-transmitted particles using a list-mode data taking system in order to investigate their correlation. From the two-dimensional spectra of the emitted SE's, we have derived the probability distributions of the SE emission, P(n(f), n(b)), where n(f) and n(b) represent the number of SE's emitted simultaneously in the forward and backward directions, respectively. Compared with those for the H+ penetration, the emission probabilities for the H-0 penetration exhibit quite different n(f)- and n(b)-dependence. Firstly, P(n(f) = 0; n(b) = 0) takes a remarkably large value. Secondly, among P(n(f), n(b))'s with n(f) + n(b) = (constant), P(n(f) not equal 0, n(b) = 0) and P(n(f) = 0, n(b) not equal 0) become the largest and the second largest probabilities. In contrast, such events that SE's are emitted in both of the forward and backward directions happen with significantly smaller probabilities. These trends are common to all projectile energies measured and seem to be explained by the predominance of the high energy internal SE production for the H-0 penetration due to the screening effect of its bound electron. (C) 2009 Elsevier B. V. All rights reserved., Aug. 2009, 267, 16, 2612, 2615, Scientific journal, 10.1016/j.nimb.2009.05.054

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• Not Refereed, 14TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF HIGHLY CHARGED IONS (HCI 2008), IOP PUBLISHING LTD, ENERGY GAIN MEASUREMENTS OF Xe9+ IONS IN COLLISIONS WITH He AND Ar, K. Ishii; K. Yoshimura; Y. Inoue; H. Ogawa, To clarify a collision dynamics of multiply charged Xe ions with rare gas target, we have measured energy gain spectra of Xe9+ in collisions with He and Ar at 200 q eV and have compared with the theoretical energy gain peak calculated by the classical over barrier model. Using energy levels of excited Xe8+(nl) ions referred to the NIST atomic spectra database, we have determined capture states of Xe9+ ions after single electron transfer., 2009, 163, 012065, International conference proceedings, 10.1088/1742-6596/163/1/012065

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• Not Refereed, 14TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF HIGHLY CHARGED IONS (HCI 2008), IOP PUBLISHING LTD, Recoil Momentum of Molecular Ions in Collisions of Ar6+ + N-2 at Energies below 300 eV/u, Y. Inoue; K. Ishii; H. Ogawa, To elucidate the collision energy dependence of the recoil momentum of molecular ions after electron transfer, we measure the recoil momentum of non-dissociated molecular ions for single electron capture collisions of Ar6+ with N-2 at collision energies from 7.5 to 240 eV/u. The measured collision energy dependence of the recoil momentum is compared with those obtained by a theoretical calculation using a deflection function with polarization potential. We obtain fairly good agreement between the measured and calculated results., 2009, 163, 012043, International conference proceedings, 10.1088/1742-6596/163/1/012043

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• Not Refereed, PHYSICAL REVIEW A, AMER PHYSICAL SOC, Dependence of secondary-electron emission on the emergent angle of frozen-charged H-0 and H+ projectiles penetrating a thin carbon foil, H. Ogawa; T. Ohata; K. Ishii; N. Sakamoto; T. Kaneko, The statistical distributions of the number of secondary electrons (SEs) emitted per projectile from a thin carbon foil under irradiation with the frozen-charged H-0 and H+ projectiles of 2.5-3.5 MeV have been measured as a function of the emergent angle of projectiles in the range from 0.0 to 2.0 mrad in every 0.5 mrad step. The measurement of SEs was carried out in the forward and the backward directions of the incident beam independently. From 0.0 mrad to similar to 1.0 mrad, the SE yields, that is, the mean number of emitted electrons per incident ion, increase with increasing emergent angle and tend to be saturated at larger angles. This is a common trend, regardless of incident energies and charge states of a projectile and also of emitted directions of SEs. Quantitatively, the saturated SE yields at larger angles for the H+ penetration are about 40-50 % larger than those at 0.0 mrad. On the other hand, the corresponding relative increase for the H-0 penetration reaches as high as similar to 100% or more. The observed proton-hydrogen difference is well reproduced in the calculated energy losses by a Monte Carlo simulation including the impact parameter dependent stopping cross sections in a single collision of a hydrogen or a proton with a carbon atom., Aug. 2007, 76, 2, 024901, Scientific journal, 10.1103/pHYSrEVa.76.024901

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Dependence of secondary electron emission on the emergent angle of 1 MeV/u H+, He2+ and Li3+ penetrating a thin carbon foil, H. Ogawa; N. Fujimoto; T. Ohata; M. Nagano; K. Ishii; N. Sakamoto; T. Kaneko, With 1 MeV/u H+, He2+ and Li3+ beams incident on a carbon foil of 2.2 mu g/cm(2) in thickness, the statistical distributions of the number of simultaneously emitted secondary electrons (SE's) have been measured as a function of the emergent angle of foil-transmitted ions in the range from 0.0 mrad to 4.0 mrad for every 0.5 mrad step. The measurement of SE's was carried out in the forward and backward directions of the incident beam independently. The SE yields, that is, the mean number of emitted electrons per incident ion, increase with increasing the emergent angle and saturate at larger angles. This trend is common to the projectiles used and also to the forward and backward directions. As a result of a Monte Carlo simulation taking account of the impact parameter dependent energy loss in a single collision of a proton with a carbon atom, it is found that the calculated energy losses exhibit an emergent angular dependence quite similar to that of the measured SE yields. However the measured SE yields divided by the square of the projectile atomic number, Z(p), becomes smaller with increasing Z(p), especially for the backward emission. A similar observation has been reported by other authors and this trend seems to originate from the preferencial fast internal SE production by heavier projectiles followed by their escape from a thin target foil. (c) 2006 Elsevier B.V. All rights reserved., Mar. 2007, 256, 1, 532, 536, Scientific journal, 10.1016/j.nimb.2006.12.052

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• Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Energy loss and small angle scattering of swift protons passing through liquid ethanol target, M. Kaneda; S. Sato; M. Shimizu; Z. He; K. Ishii; H. Tsuchida; A. Itoh, We have measured energy and angular distributions of fast protons passing through an ethanol liquid jet target. By applying the Moliere's theory of multiple scattering, we reproduced successfully our experimental results of energy and angular distributions and found that the Moliere's theory is useful for the prediction of energetic proton and heavy ion deflection in liquid materials. Moreover, we compared stopping powers obtained from our experiment with SRIM2003 and found an about 10% discrepancy between them. The present method can become a powerful tool for the measurement of particle stopping in liquids and the other collision interactions. (c) 2007 Published by Elsevier B.V., Mar. 2007, 256, 1, 97, 100, Scientific journal, 10.1016/j.nimb.2006.11.131

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• Not Refereed, HCI 2006: 13TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF HIGHLY CHARGED IONS, IOP PUBLISHING LTD, Charge changing cross sections in collisions of O-18(7+) with He at energies below 1 keV/u, K. Ishii; A. Itoh; K. Okuno, Single electron capture cross sections have been measured for collisions between O7+ and He at energies from 1 eV/q to 1keV/q. Experimental cross sections are compared with those for H-like ions of C5+ and N6+ impacts. Cross sections for C5+ and O7+ are found to depend only weakly on the collision energy, while those for N6+ vary rather strongly. By using a velocity-dependent classical over barrier model, the energy dependency is accounted for qualitatively., 2007, 58, 279, +, International conference proceedings, 10.1088/1742-6596/58/1/061

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• Not Refereed, HCI 2006: 13TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF HIGHLY CHARGED IONS, IOP PUBLISHING LTD, Energy gain spectroscopy of multiply charged light ions in collisions with hydrogen at 50 eV/u, K. Ishii; Y. Inoue; H. Ogawa; A. Itoh; N. Sakamoto, We have measured energy gain spectra for single-electron capture collisions of He-like C, N and O ions with H-2 at 50 eV/u. Energy gain spectra were examined with energy gain functions calculated from a classical over barrier model, and we obtained fairly good agreement between experimental and calculated results. We find that single electron capture occurs predominantly for C4+ and O6+ ions, while for N5+ ions double electron capture followed by transfer ionization is the dominant process in the formation of N3+ ions., 2007, 58, 275, +, International conference proceedings, 10.1088/1742-6596/58/1/060

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• Not Refereed, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, Energy loss of swift protons in liquid water and ethanol, A Itoh; M Kaneda; S Satoh; K Ishii; H Tsuchida, Energy loss measurement has been performed for the first time for MeV energy hydrogen ions passing through a liquid jet target produced by our newly developed liquid-in-vacuum apparatus. Liquid jet targets of water and ethanol were ejected into vacuum through all aperture of 20 pm in diameter. Preliminary experimental results of energy loss spectra are reported. It was found that the energy loss of swift protons in liquids are slightly different from the conventional stopping power data obtained from the SRIM code. However, this discrepancy is possibly attributable to our incorrect estimation of the liquid jet diameter. (c) 2005 Elsevier B.V. All rights reserved., Apr. 2006, 245, 1, 76, 79, Scientific journal, 10.1016/j.nimb.2005.11.082

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• Not Refereed, PHYSICAL REVIEW A, AMER PHYSICAL SOC, Charge-changing cross sections of fast H-0,H-1+ and He-0,He-1+,He-2+ projectiles in C-60, A Itoh; K Nose; Y Hamamoto; T Mizuno; K Ishii, Electron capture and loss cross sections have been measured for fast light projectile ions of 0.5 MeV H-0,H-1+ and 0.5-2.0 MeV He-4(0,1+,2+) in collisions with C-60. The gaseous target of C-60 was prepared by heating C-60 powder in a target cell to temperatures of 300-500 degrees C, and outgoing charge fractions were measured as a function of the cell temperature. Absolute cross sections are deduced by using two different vapor-pressure data available in literature. Experimental cross sections are examined in comparison with theoretical values obtained from various conventional formulas proposed for atomic targets. In addition, single- and double-electron capture cross sections are also calculated on the basis of a classical model by taking account of the local electron density of C-60. From a complete set of our experimental cross sections, equilibrium charge fractions are also deduced and found to be essentially the same as carbon-foil data, indicating no gas-solid difference., Nov. 2005, 72, 5, 052718, Scientific journal, 10.1103/PhysRevA.72.052718

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• Not Refereed, PHYSICAL REVIEW A, AMERICAN PHYSICAL SOC, Electron-capture cross sections of multiply charged slow ions of carbon, nitrogen, and oxygen in He, K Ishii; A Itoh; K Okuno, Experimental cross sections are presented for single- and double-electron capture by Cq+, Nq+, and Oq+, (q= 2-6) ions from He at incident energies of (1.0-1800)q eV. Measurements were performed by using a mini-electron-beam-ion-source apparatus in combination with an octopole-ion-beam-guide. The cross sections are found to vary significantly depending on the collision energy as well as on the projectile species. Some cross sections reveal minima at incident energies of a few eV/u, below which the cross sections increase with decreasing incident energy. To account for the experimental results, we developed a formalism of velocity-dependent capture cross sections within the framework of the classical over barrier model by employing an induced dipole interaction potential between the collision partners. In the calculations, doubly excited levels of projectile ions, formed via simultaneous excitation of the outermost projectile electron, were taken into consideration. It is found that the present model can satisfactorily reproduce the experimentally obtained energy dependence as well as absolute values of the cross sections. We conclude that the attractive induced dipole potential and simultaneous projectile excitation are important in low energy electron-capture collisions., Oct. 2004, 70, 4, 042716, Scientific journal, 10.1103/PhysRevA.70.042716

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• Refereed, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, IOP PUBLISHING LTD, Complete photoionization experiment in the region of the 2 delta(g) -> delta(u) shape resonance of the N(2) molecule, S Motoki; J Adachi; K Ito; K Ishii; K Soejima; A Yagishita; SK Semenov; NA Cherepkov, Angular distributions of photoelectrons (ADPs) from the 2sigma(g) shell of a fixed-in-space N(2) molecule have been measured for left- and right-elliptically polarized, as well as for linearly polarized, light. From these data a set of dipole matrix elements and phase shift differences characterizing the process has been determined taking into account the acceptance angles of both electron and ion detectors, i.e. the complete experiment has been performed. Good agreement between the experimental and the relevant theoretical values calculated in the random phase approximation is obtained. Based on the results of the complete experiment, three-dimensional ADPs and ions are predicted for different light polarizations., Sep. 2002, 35, 18, 3801, 3819, Scientific journal
• Not Refereed, PHYSICAL REVIEW A, AMERICAN PHYSICAL SOC, Simultaneous charge polarization and fragmentation of N-2 molecules in slow keV collisions with Kr8+ ions, M Ehrich; U Werner; HO Lutz; T Kaneyasu; K Ishii; K Okuno; U Saalmann, Coulomb fragmentation processes in collisions of Kr8+ ions with nitrogen molecules were studied at projectile energies between 19 and 171 eV/u. At low impact energies (less than or similar to50 eV/u) and small impact parameters, the electron distribution of the fragmenting molecular N-2(q+) ion becomes strongly polarized. This is due to the presence of the slow highly charged projectile during the fragmentation process. Microscopic calculations simultaneously incorporating electron transfer and molecular dissociation give insight into the dynamics of this newly found polarization effect., Mar. 2002, 65, 3, 03702, Scientific journal, 10.1103/PhysRevA.65.030702

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• Not Refereed, PHYSICAL REVIEW LETTERS, AMERICAN PHYSICAL SOC, Direct probe of the shape resonance mechanism in 2 sigma(g)-shell photoionization of the N-2 molecule, S Motoki; J Adachi; K Ito; K Ishii; K Soejima; A Yagishita; SK Semenov; NA Cherepkov, Angular distributions of photoelectrons from a 2sigma g shell of fixed-in-space N-2 molecules have been measured for left- and right-elliptically polarized and for linearly polarized light at several photon energies in the region of sigma* shape resonance. That allowed the determination of a set of dipole matrix elements and phase shift differences characterizing the process. These data clearly show the enhancement of the f sigma(u) partial cross section in the resonance simultaneously with an abrupt increase of the corresponding phase shift by pi, which is the first experimental demonstration of the nature of the sigma* shape resonance in homonuclear diatomic molecules., Feb. 2002, 88, 6, 063003, Scientific journal, 10.1103/PhysRevLett.88.063003

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• Not Refereed, PHYSICA SCRIPTA, ROYAL SWEDISH ACAD SCIENCES, Charge-changing cross sections in collisions of Cq+(q=2-5) with He and H-2 at energies below 750 eV/u, K Ishii; T Tanabe; R Lomsadze; K Okuno, Charge changing cross sections of Cq+ in collisions with He and H-2 for q = 2-5 have been systematically measured at low energies, ranging from 1-1800eV/q. The measured cross sections for He target for the most part have stronger dependence on the collision energy than those for H-2 target., 2001, T92, 332, 334, Scientific journal
• Not Refereed, PHYSICA SCRIPTA, ROYAL SWEDISH ACAD SCIENCES, Single- and multiple-charge changing cross sections in slow collisions of Krq+(q=7-9) with Ne, N-2, O-2 and CO, K Ishii; K Okuno; N Kobayashi, Charge changing cross sections of Krq+ in collisions with Ne and CO for q = 7-9 in addition to N-2 and O-2 for q = 8 and electron capture cross sections of He-3(2+) in collisions with N-2, O-2 and CO have been measured at low energies, ranging from 0.006 q to 11.9.q eV/amu and from 0.333 to 1333 eV/amu, respectively. The measured cross sections, except for single-charge changing cross sections of Krq+, are strongly dependent on collision energy. Multiple-charge changing cross sections of Krq+ typically show a minimum in their collision energy dependence. The collision energy characteristics are explained well by taking the induced-dipole interaction potential into consideration., 1999, T80B, 176, 178, Scientific journal
• Not Refereed, PHYSICA SCRIPTA, ROYAL SWEDISH ACAD SCIENCES, Double electron capture processes in collisions of He-3(2+) with N-2, O-2 and CO at 1 keV/amu, K Okuno; T Kaneyasu; K Ishii; M Yoshino; N Kobayashi, We have newly developed a double coincidence time-of-flight (TOF) instrument for fragment ion spectroscopy of molecular targets in low energy collisions of multiply charged ions. The double electron capture processes in collisions of He-3(2+) ions with molecular targets of N-2, O-2 and CO at 1 keV/amu energy have been revealed by means of the three particle coincidence detection method and their branching ratios have been determined., 1999, T80B, 173, 175, Scientific journal
• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, Application of ion channeling to isobar separation in AMS, Matsubara Akihiro; Fujita Natsuko; Ishi Kunikazu, 2018, 73, 0, 646, 646, 10.11316/jpsgaiyo.73.1.0_646

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• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, Charge state distribution of ion in doughnut effect of channeling, Matsubara Akihiro; Fujita Natsuko; Ishii Kunikazu, 2017, 72, 0, 531, 531, 10.11316/jpsgaiyo.72.2.0_531

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• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 23pAP-7 The Comparison of energy distributions of an ion beam extracted into air and He atmospheres with a large bore metal capillary, Umigishi M.; Hirano Y.; Ishii K.; Ogawa H., 2015, 70, 730, 730, 10.11316/jpsgaiyo.70.1.0_730

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• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 23pAP-8 Simulation of an ion beam diameter extracted into air through a large-bore metal capillary, Hirano Y.; Umigishi M.; Ishii K.; Ogawa H., 2015, 70, 731, 731, 10.11316/jpsgaiyo.70.1.0_731

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• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 19aAE-9 The transmission properties of an ion beam extracted into atmospheric gas by a large bore metal capillary, Umigishi M.; Hirano Y.; Ishii K.; Ogawa H., 2016, 71, 620, 620, 10.11316/jpsgaiyo.71.1.0_620

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• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 19aAE-10 Simulation of an ion beam diameter extracted into air through a large-bore metal capillary, Hirano Y.; Umigishi M.; Ishii K.; Ogawa H., 2016, 71, 621, 621, 10.11316/jpsgaiyo.71.1.0_621

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• Refereed, Physical Review A - Atomic, Molecular, and Optical Physics, Charge-changing cross sections of fast H0,1+ and He0,1+,2+ projectiles in C60, A. Itoh; K. Nose; Y. Hamamoto; T. Mizuno; K. Ishii, Electron capture and loss cross sections have been measured for fast light projectile ions of 0.5MeV H0,1+ and 0.5-2.0MeV He0,1+,2+4 in collisions with C60. The gaseous target of C60 was prepared by heating C60 powder in a target cell to temperatures of 300-500°C, and outgoing charge fractions were measured as a function of the cell temperature. Absolute cross sections are deduced by using two different vapor-pressure data available in literature. Experimental cross sections are examined in comparison with theoretical values obtained from various conventional formulas proposed for atomic targets. In addition, single- and double-electron capture cross sections are also calculated on the basis of a classical model by taking account of the local electron density of C60. From a complete set of our experimental cross sections, equilibrium charge fractions are also deduced and found to be essentially the same as carbon-foil data, indicating no gas-solid difference. © 2005 The American Physical Society., Nov. 2005, 72, 5, Scientific journal, 10.1103/PhysRevA.72.052718

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• Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, 13aTG-12 Secondary Ions from Ion-Irradiated Liquid Beam Target, Kaneda M.; Sato S.; Ishii K.; Tsuchida H.; Mafune F; Kohno J.; Itoh A, 2004, 59.2.2, 108, 10.11316/jpsgaiyo.59.2.2.0_108_2

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• Refereed, Physical Review A - Atomic, Molecular, and Optical Physics, Simultaneous charge polarization and fragmentation of [Formula Presented] molecules in slow keV collisions with [Formula Presented] ions, M. Ehrich; U. Werner; H. O. Lutz; T. Kaneyasu; K. Ishii; K. Okuno; U. Saalmann, Coulomb fragmentation processes in collisions of [Formula Presented] ions with nitrogen molecules were studied at projectile energies between 19 and 171 eV/u. At low impact energies [Formula Presented] and small impact parameters, the electron distribution of the fragmenting molecular [Formula Presented] ion becomes strongly polarized. This is due to the presence of the slow highly charged projectile during the fragmentation process. Microscopic calculations simultaneously incorporating electron transfer and molecular dissociation give insight into the dynamics of this newly found polarization effect. © 2002 The American Physical Society., 2002, 65, 3, 4, Scientific journal, 10.1103/PhysRevA.65.030702

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• Refereed, Nuclear Instruments and Methods in Physics Research B, Applications of ion channeling to the isobar separation of AMS, Matsubara, Akihiro; Fujita, Natsuko; Ishii, Kunikazu, AMSにおける同重体分別技術の開発が盛んに行われている。本論文では、2つの新しい同重体分離技術を提案する。一つはチャネリングディグレーダーともう一つはコヒーレント共鳴励起(RCE)に基づく同重体分離である。両方とも、イオンが結晶チャネルを通過すると、大きな角度のイオン散乱を大幅に減少させる現象である「イオンチャネリング」に基づいている。チャネリングディグレーダーではイオンの透過性を上げることに成功した。またRCEに基づく同重体分離については結晶内での電離段階を利用した同重体分離を行っている。

MISC

• Not Refereed, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Applications of ion channeling in accelerator mass spectrometry, Akihiro Matsubara; Natsuko Fujita; Kunikazu Ishii, © 2018 Elsevier B.V. Three applications based on the passage of channeled ions through a crystalline membrane are proposed for the accelerator mass spectrometry (AMS) technology. (i) A channeling degrader for the separation of isobars suppresses the angular straggling even if a sufficient energy difference is created between the AMS nuclide and its isobars using a relatively thick membrane. A proof-of-principle experiment showed its potential comparative advantage. Feasibility will be discussed for two other potential applications; the experimental demonstrations are under consideration. (ii) A channeling stripper simultaneously provides a sufficient stripping function to remove interfering molecules in the AMS and low gas pressure to prevent ion scattering. This helps in overcoming a crucial problem in the development of an (A)MS systems in the range of 50 keV. Surface channeling by grazing incidence onto a stack of mono-crystalline substrates is introduced to address the high particle load. (iii) A novel isobar separation technique, using resonant coherent excitation based on periodical field induced by ions passing through the lattice, assists in controlling the charge state of the AMS nuclide and its isobars directly. For practical use, the thickness of the crystalline membrane should be reduced to satisfy the charge state distribution in the non-equilibrium states., 01 Jan. 2018, 437, 81, 86, 10.1016/j.nimb.2018.09.032

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• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, Development Isobar Separation Method of Accelerator Mass Spectrometry with Resonance Coherent Excitation I, Matsubara A; Fujita N; Ishi K, <p>加速器質量分析(AMS)では，測定目的核種である^10^Be，^36^Cl等の長半減期放射性核種と，この安定同重体（^10^Be に対しては^10^B，^36^Clに対しては^36^S）との分別が必須の技術である．筆者らは，新しい同重体分別技術として，コヒーレント共鳴励起(RCE)で目的核種あるいは同重体を選択的に電離させ両者を分別する方法の開発に取り組んでいる．問題は，イオンのエネルギーが1 MeV/u程度では，結晶内の電子とのランダムな衝突過程でRCEが不鮮明になることである．そこで，非平衡荷電状態を取り入れるなど，幾つかの対策を立てて基礎実験を進めている．本講演では，原子力機構 東濃地科学センターのAMS装置を用いた基礎実験の結果について述べる．</p>, 21 Mar. 2017, 72, 0, 592, 592, 10.11316/jpsgaiyo.72.1.0_592

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• Not Refereed, 原子衝突学会年会講演概要集, 大気圧中における各種キャピラリを透過したMeVイオンビームの透過特性とその応用, 藤田奈津子; 石井邦和; 小川英巳, 28 Jul. 2012, 37th, 32

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• Not Refereed, XXVII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC 2011), PTS 1-15, IOP PUBLISHING LTD, Transmission property and its applications of MeV ion beams with various capillaries, N. Fujita; K. Ishii; H. Ogawa, In order to clarify transmission properties of an ion beam extracted with various capillaries into the air, we have measured intensity distributions for the core and the halo components of MeV ion beams using various capillaries. In addition, we have performed in-air-RBS and in-air-PIXE from the point of the application. At the conference, progress report of transmission properties of ion beams with various capillaries and its applications will be presented., 2012, 388, 10.1088/1742-6596/388/14/142007

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• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 25pGC-6 Transmission property and its applications of MeV ion beams with various capillaries III, Fujita N; Ishii K; Ogawa H, 2012, 67, 0
• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 18pAJ-13 Transmission property and its applications of MeV ion beams with various capillaries IV, Fujita N; Ishii K; Ogawa H, 2012, 67, 0
• Not Refereed, 原子衝突研究協会年会講演概要集, 大気中における各種キャピラリを透過したMeVイオンビーム径測定, 藤田奈津子; 石井邦和; 小川英巳, 09 Aug. 2011, 36th, 66

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• Not Refereed, 日本物理学会講演概要集, 各種キャピラリによるMeVイオンビームの透過特性とその応用, 藤田奈津子; 石井邦和; 小川英巳, 03 Mar. 2011, 66, 1, 194

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• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 26aRD-7 Transmission property and its applications of MeV ion beams with various capillaries, Fujita N; Ishii K; Ogawa H, 2011, 66, 0, 194, 194
• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 22pEE-8 Transmission property and its applications of MeV ion beams with various capillaries II, Fujita N; Ishii K; Ogawa H, 2011, 66, 0, 160, 160
• Not Refereed, 原子衝突研究協会年会講演概要集, 各種キャピラリによるMeVイオンビームの透過特性, 藤田奈津子; 石井邦和; 小川英巳, 09 Aug. 2010, 35th, 91

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• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 20aTC-9 Development of Ion-Beam Material Analysis with Tapered Glass Capillary III, Fujita N; Ishii K; Ogawa H, 2010, 65, 0, 162, 162
• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 24pRD-5 Development of Two-Dimensional Mapping Technique with In-Air-PIXE Method by Capillaries, Fujita N; Ishii K; Ogawa H, 2010, 65, 0
• Not Refereed, Journal of Physics: Conference Series, Institute of Physics Publishing, Development of In-Air-RBS method with tapered glass capillary, N. Fujita; K. Ishii; H. Ogawa, We have developed the material analysis method with MeV ion beam using a tapered glass capillary in air. In the In-Air-RBS, we have measured RBS spectra by protons for Au foils of four different thicknesses in air. At the conference, progress report of In-Air-RBS method involving detailed discussions will be presented., 24 Dec. 2009, 194, 14, 10.1088/1742-6596/194/14/142004

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• Not Refereed, 原子衝突研究協会年会講演概要集, ガラスキャピラリを用いたイオンビーム物質分析法の開発, 藤田奈津子; 石井邦和; 小川英巳, 20 Aug. 2009, 34th, 94

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• Not Refereed, 日本物理学会講演概要集, ガラスキャピラリを用いたイオンビーム物質分析法の開発, 藤田奈津子; 石井邦和; 小川英巳, 03 Mar. 2009, 64, 1, 154

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• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 28aSK-12 Development of Ion-Beam Material Analysis with Tapered Glass Capillary, Fujita N; Ishii K; Ogawa H, 2009, 64, 0
• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 26aZB-2 Development of Ion-Beam Material Analysis with Tapered Glass Capillary II, Fujita N; Ishii K; Ogawa H, 2009, 64, 0
• Not Refereed, 原子衝突研究協会研究会講演概要集, ガラスキャピラリを用いたPIXE分析, 藤田奈津子; 石井邦和; 小川英巳, 05 Aug. 2008, 33rd, 45

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• Not Refereed, Meeting Abstracts of the Physical Society of Japan, 一般社団法人 日本物理学会, 23aRA-9 Present study of PIXE analysis with a grass capillary at Nara Women's University, Ishii K; Kusui A; Fujita N; Matsui C; Ogawa H; Sakamoto N, 2008, 63, 0, 143, 143
• 放射線(Web), Application of Ion Channeling for downsizing Accelerator Mass Spectrometry (AMS) systems, 松原章浩; 藤田奈津子; 石井邦和; 木村健二, 2020, 45, 3
• 日本物理学会講演概要集(CD-ROM), イオンチャネリングを利用したAMSの同重体分別, 松原章浩; 藤田奈津子; 石井邦和, 2018, 73, 1
• 応用物理学会秋季学術講演会講演予稿集(CD-ROM), イオンチャネリングのAMS技術への応用開拓, 松原章浩; 藤田奈津子; 石井邦和, 2018, 79th
• 日本物理学会講演概要集(CD-ROM), イオンチャネリングのドーナツ効果における荷電分布, 松原章浩; 藤田奈津子; 石井邦和, 2017, 72, 2
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 7pAZ-10 Measurements of an ion beam diameter extracted into air through a large-bore metal capillary, Hirano Y.; Umigishi M.; Ishii K.; Ogawa H., 22 Aug. 2014, 69, 2, 64, 64
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 7pAZ-9 Energy distribution of an ion beam extracted in air with large bore capillary, Umigishi M.; Hirano Y.; Ishii K.; Ogawa H., 22 Aug. 2014, 69, 2, 64, 64
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), The clarification of the molecular dissociation phenomenon by fast ion collision, Yamaki A.; Ishii K.; Ogawa H., 26 Aug. 2013, 68, 2, 165, 165
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), A comparison of secondary-electron emission from a thin carbon foil upon 1 MeV/u light ions penetration II, Amano S.; Ogawa H.; Ishii K.; kaneko T., 26 Aug. 2013, 68, 2, 141, 141
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 27pEG-9 Secondary electron emission from thin carbon foils by neutral hydrogen irradiation, Ogawa H.; Sorai K.; Amano S.; Ishii K.; Kaneko T., 26 Mar. 2013, 68, 1, 225, 225
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 19pAJ-9 Forward-backward correlation of secondary electron emission from a thin carbon foil depending on the emergent angle of foil-transmitted protons II, Sorai K.; Amano S.; Ogawa H.; Ishii K.; Kaneko T., 24 Aug. 2012, 67, 2, 151, 151
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 19pAJ-8 A comparison of secondary-electron emission from a thin carbon foil upon 1 MeV/u light ions penetration, Amano S.; Sorai K.; Ogawa H.; Ishii K.; kaneko T., 24 Aug. 2012, 67, 2, 151, 151
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25aAB-9 Forward-backward correlation of secondary electron emission from a thin carbon foil depending on the emergent angle of foil-transmitted protons, Sorai K.; Amano S.; Ogawa H.; Ishii K.; Kaneko T., 05 Mar. 2012, 67, 1, 197, 197
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 26pAB-5 Study of fragmentation of molecule in collisions with highly charged ions in low energy region using 4π detector II, Okano M.; Ishii K.; Ogawa H., 05 Mar. 2012, 67, 1, 215, 215
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Charge transfer reactions of slow highly charged ions XXVII Doubly charged molecular ion collision with molecular target, Fukuda K; Ishii K; Okuno K, 13 Aug. 2002, 57, 2, 135, 135
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25pRA-6 MOLECULAR FRAGMENTATION IN COLLISIONS OF MULTIPLY CHARGED IONS WITH MOLECULES AT LOW ENERGIES II, Inoue Y.; Ishii K.; Ogawa H.; Sakamoto N., 29 Feb. 2008, 63, 1, 191, 191
• 日本物理学会講演概要集, 一般社団法人日本物理学会, 23pRB-2 ビーム透過による炭素薄膜からの前方と後方への二次電子放出の同時計測(放射線物理(衝突に伴うエネルギー付与),領域1,原子・分子,量子エレクトロニクス,放射線物理), 園田 未来; 井上 洋子; 小川 英巳; 石井 邦和; 坂本 直樹; 金子 敏明, 29 Feb. 2008, 63, 1, 156, 156
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 21aXH-7 CHARGE TRANSFER OF MULTIPLY CHARGED C, N and O IONS IN COLLISIONS WITH H_2 and N_2 AT LOW ENERGIES, Inoue Y.; Yoshimura K.; Ishii K.; Ogawa H.; Sakamoto N., 28 Feb. 2007, 62, 1, 167, 167
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 30aSL-12 MOLECULAR FRAGMENTATION IN COLLISIONS OF MULTIPLY CHARGED IONS WITH MOLECULES AT LOW ENERGIES IV, Inoue Y.; Ishii K.; Ogawa H., 03 Mar. 2009, 64, 1, 185, 185
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 20pTC-4 Forwad-backward correlation in secondary electron emission from thin carbon foils by proton penetration, Ogawa H.; Shimada A.; Inoue Y.; Ishii K.; Kaneko T., 01 Mar. 2010, 65, 1, 169, 169
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 23aTC-1 MOLECULAR FRAGMENTATION IN COLLISIONS OF MULTIPLY CHARGED IONS WITH MOLECULES AT LOW ENERGIES VI, Inoue Y.; Ishii K.; Ogawa H., 01 Mar. 2010, 65, 1, 209, 209
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 23aTC-8 Development of 4π detector to clarify collision dynamics of highly charged ions in collisions with molecule in ultra low energy region, Ishii K.; Inoue Y.; Ogawa H., 01 Mar. 2010, 65, 1, 211, 211
• 日本物理学会講演概要集, 一般社団法人日本物理学会, 21pRE-5 荷電凍結したH^0透過による炭素膜からの2次電子収量におけるH^0の出射角に対する依存性(放射線物理(エネルギー付与過程),領域1,原子・分子,量子エレクトロニクス,放射線物理), 小川 英巳; 大畑 珠代; 石井 邦和; 坂本 直樹; 金子 敏明, 21 Aug. 2007, 62, 2, 154, 154
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25pWD-6 COLLISION DYNAMICS OF MULTIPLY CHARGED IONS IN COLLISIONS WITH MOLECULES AT LOW ENERGIES, Inoue Y.; Yoshimura K.; Ishii K.; Ogawa H.; Sakamoto N., 18 Aug. 2006, 61, 2, 116, 116
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 26aWD-5 Dependence of secondary electron emission on the emergent angle of frozen-charged H^0 penetrating a thin carbon foil, Ohata T.; Nagano M.; Ogawa H.; Ishii K.; Sakamoto N.; Kaneko T., 18 Aug. 2006, 61, 2, 121, 121
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25pWD-1 State selective charge transfer reaction in collisions of slow multiply charged ion with atom and molecule, Yoshimura K.; Inoue Y.; Ishii K.; Ogawa H.; Sakamoto N., 18 Aug. 2006, 61, 2, 114, 114
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 21pRF-3 MOLECULAR FRAGMENTATION IN COLLISIONS OF MULTIPLY CHARGED IONS WITH MOLECULES AT LOW ENERGIES, Inoue Y.; Ishii K.; Ogawa H.; Sakamoto N., 21 Aug. 2007, 62, 2, 157, 157
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 27aZB-3 MOLECULAR FRAGMENTATION IN COLLISIONS OF MULTIPLY CHARGED IONS WITH MOLECULES AT LOW ENERGIES V, Inoue Y.; Ishii K.; Ogawa H., 18 Aug. 2009, 64, 2, 83, 83
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25aZB-12 Correlation of secondary electron emission in the forward and backward directions from a thin carbon foil by H^0 and H^+ irradiation, Shimada A.; Inoue Y.; Ogawa H.; Ishii K.; Kaneko T., 18 Aug. 2009, 64, 2, 51, 51
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 24aRD-2 Forwad-backward correlation in secondary electron emission from thin carbon foils by proton penetration, Ogawa H.; Shimada A.; Kiuchi M.; Hagihara M.; Ishii K.; Kaneko T., 18 Aug. 2010, 65, 2, 120, 120
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25pRH-9 Development of 4π detector to clarify collision dynamics of highly charged ions in collisions with molecule in ultra low energy region II, Okano M.; Inoue Y.; Ishii K.; Ogawa H., 18 Aug. 2010, 65, 2, 159, 159
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 23aEA-8 Study of fragmentation of molecule in collisions with highly charged ions in low energy region using 4π detector, Okano M.; Ishii K.; Ogawa H., 24 Aug. 2011, 66, 2, 165, 165
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 21pEB-5 Secondary electron emission in the forward and backward directions from a thin carbon foil by hydrogen beam penetration, Kiuchi M.; Hagihara M.; Ogawa H.; Ishii K.; Kaneko T., 24 Aug. 2011, 66, 2, 131, 131
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 21pEB-6 Measurement of energy spectra of secondary electron emitted from a thin carbon foil by ^7Li^<3+> penetration, Hagihara M.; Kiuchi M.; Sorai K.; Ogawa H.; Ishii K.; Kaneko T., 24 Aug. 2011, 66, 2, 132, 132
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25aRA-7 Development of 4π detector to clarify collision dynamics of highly charged ions in collisions with molecule in ultra low energy region III, Okano M.; Ishii K.; Ogawa H., 03 Mar. 2011, 66, 1, 165, 165
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 25pRA-6 Secondary electron emission from thin carbon foils by neutral hydrogen irradiation, Ogawa H.; Shimada A.; Kiuchi M.; Hagihara M.; Ishii K.; Kaneko T., 03 Mar. 2011, 66, 1, 177, 177
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 8a-YP-1 Charge transfer reactions of low energy multiply charged ions XIX : Electron capture cross sections of Kr^ in collisions with diatomic molecules, Ishii K .; Okuno K.; Kobayashi N., 16 Sep. 1997, 52, 2, 881, 881
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Low energy charge transfer reactions of highly charged ions XXV : Electron capture cross sections of C^,N^,O^+He,H_2, Ishii K.; Okuno K., 03 Sep. 2001, 56, 2, 53, 53
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Perfect experiments on photoionization by 2og photoelectron angular distributions from oriented N_2 molecules, Yagishita A.; Motoki S.; Adachi J.; Ito K.; Ishii K.; Soejima K., 09 Mar. 2001, 56, 1, 121, 121
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Charge transfer reactions of low energy charged ions XXIV : Electron capture cross sections of C^<6+> colliding with H_2 and He, Ishii K.; Okuno K., 09 Mar. 2001, 56, 1, 136, 136
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 21pYA-13 State in collisions of slow multiply charged ion with atom and moleule, Yoshimura K.; Inoue Y.; Ishii K.; Ogawa H.; Sakamoto N., 19 Aug. 2005, 60, 2, 85, 85
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 19pYR-8 Dependence of binary electron yields on the emergent angle of ions penetrating a thin carbon foil, Nagano M.; Ohata T.; Ogawa H.; Ishii K.; Sakamoto N., 19 Aug. 2005, 60, 2, 57, 57
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 19pYR-2 A Mean Excitation Energy of C_<60> on the Basis of Local Plasma Approximation, Sakamoto Naoki; Ogawa Hidemi; Ishii Kunikazu; Tsuchida Hidetsugu, 19 Aug. 2005, 60, 2, 55, 55
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 22aZF-4 Secondary electron emission from a thin carbon foil by equi-velocity proton and electron irradiation, Ogawa H.; Sonoda M.; Inoue Y.; Ishii K.; Kaneko T., 25 Aug. 2008, 63, 2, 129, 129
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 20pZF-9 MOLECULAR FRAGMENTATION IN COLLISIONS OF MULTIPLY CHARGED IONS WITH MOLECULES AT LOW ENERGIES III, Inoue Y.; Ishii K.; Ogawa H.; Sakamoto N., 25 Aug. 2008, 63, 2, 109, 109
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 28pTA-4 Angular Distribution of Fast Hydrogen Ions Scattered by Liquid Materials, Kaneda M.; Shimizu M.; Sato S.; He Z.; Ishii K.; Tsuchida H.; Itoh A., 04 Mar. 2006, 61, 1, 164, 164
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 13aTG-11 Energy spectra from Ion-Irradiated Liquid Beam Target, Ishii K.; Kaneda M.; Sato S.; Tsuchida H.; Mafune F.; Kohno J.; Itoh A., 25 Aug. 2004, 59, 2, 108, 108
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 28aXN-1 The ion beam experiment using the liquid beam target, Kaneda M.; Tao Y.; Ishii K.; Mafune F.; Kohno J.; Itoh A., 03 Mar. 2004, 59, 1, 168, 168
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), The ion beam experiment using the liquid beam target I, Tao Y.; Kaneda M.; Ishii K.; Yoshida K.; Kohno J.; Mafune F.; Itoh A., 15 Aug. 2003, 58, 2, 108, 108
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Charge transfer reactions of low energy charged ions XXIII. : Electron capture cross sections of O^ colliding with H_2 and He, Ishii K.; Guer B.; Okuno K., 10 Sep. 2000, 55, 2, 79, 79
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Charge transfer reaction of low energy charged ions XXII. : Electron capture cross sections of N^ colliding with He and H_2, Endo A.; Ishii K.; Okuno K., 10 Sep. 2000, 55, 2, 79, 79
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Charge transfer reactions of low energy charged ions XXI : Electron capture cross sections of C^ colliding with H_2 and He, Ishii K.; Tanabe T.; Lomsadze R.; Okuno K., 10 Mar. 2000, 55, 1, 77, 77
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 28a-ZC-6 Charge transfer reactions of low energy multiply charged ions XX : Electron capture cross sections of Kr^ ions colliding with diatomic molecule, Ishii K.; Nakade H.; Okuno K.; Kobayashi N., 15 Mar. 1999, 54, 1, 744, 744
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 29a-ZC-3 Coulomb Explosion of Diatomic Molecules in Double Electron Capture Collisions of ^3He^<2+> III, Kaneyasu T.; Ishii K.; Okuno K.; Yoshino M.; Kobayashi N., 15 Mar. 1999, 54, 1, 749, 749
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), Coulomb Explosion of Diatomic Molecules in Double Electron Capture Collisions of ^3He^<2+> II, KANEYASU T.; ISHII K.; OKUNO K.; YOSHINO M.; KOBAYASHI N., 05 Sep. 1998, 53, 2, 885, 885
• Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 31a-YK-11 Charge transfer reactions of low energy multiply charged ions XVII : Electron capture cross sections of He^<2+> -N_2,O_2 and CO, Ishii K; Thompson W.R; Okuno K; Kobayashi N, 17 Mar. 1997, 52, 1, 801, 801

Presentations

• 日本物理学会 第73回年次大会, 高速分子イオンと原子分子標的との衝突における立体的衝突現象の解明, 2018
• 日本物理学会 第73回年次大会, ヘリウムキャピラリーを用いたMeVイオンビームの大気圧雰囲気下への引き出し, 2018
• 日本物理学会 第73回年次大会, イオンチャネリングを利用したAMSの同重体分別, 2018
• 日本物理学会 第72回年次大会, コヒーレント共鳴励起を利用した加速器質量分析の同重体分別に向けた基礎研究I, 2017
• 日本物理学会 第72回年次大会, 高速分子イオンと原子分子の衝突における立体的衝突効果, 2017
• ICPEAC XXX, MeV ion beam extraction into air with a glass capillary filled with He, 2017
• ICPEAC XXX, Stereoscopic collisions of MeV molecular ion with atom and molecule, 2017
• 日本物理学会 2017年秋季大会, イオンチャネリングのドーナツ効果における荷電分布, 2017
• 日本物理学会 2017年秋季大会, 軽イオン透過による炭素薄膜からの二次電子放出の前方 後方相関の入射粒子依存性, 2017
• 日本物理学会 2017年秋季大会, 陽子透過による炭素薄膜からの二次電子放出のポーリア分布による記述, 2017
• ICPEAC XXX, MeV ion beam extraction into air with a glass capillary filled with He, 2017
• ICPEAC XXX, Stereoscopic collisions of MeV molecular ion with atom and molecule, 2017
• 日本物理学会第71回年次大会, 大口径キャピラリを用いて雰囲気ガス中に引き出されたイオンビームの透過特性, 2016
• 日本物理学会第71回年次大会, キャピラリ中におけるイオンビーム透過特性の3次元モンテカルロシミュレーション, 2016
• 原子衝突学会第41回年会, 陽子入射による炭素薄膜からの二次電子放出確率とポーリア分布, 2016
• 原子衝突学会第41回年会, 陽子透過による炭素薄膜からの二次電子放出の前方-後方相関の入射エネルギー依存性, 2016
• 原子衝突学会第41回年会, 高速分子イオンの解離現象の解明, 2016
• 日本物理学会 第70回年次大会, 大口径メタルキャピラリを用いて雰囲気ガス(空気, He)中に引き出されたイオンビームのエネルギー分布の比較, 2015
• 日本物理学会 第70回年次大会, 大口径メタルキャピラリにより大気圧中に引き出されたイオンビームの強度分布シミュレーション, 2015
• Kyoto Workshop on Positron Sciences "Application of Quantum Beams in the Functional Materials Analysis", The transmission properties of ion beams extracted into atmospheric gas with a large bore metal capillary, 2015
• Kyoto Workshop on Positron Sciences "Application of Quantum Beams in the Functional Materials Analysis", The transmission properties of ion beams extracted into atmospheric gas with a large bore metal capillary, 2015
• ICACS (the International Conference on Atomic Collisions in Solids), Energy distribution of an ion beam extracted into air with a large bore metal capillary, 2014
• ICACS (the International Conference on Atomic Collisions in Solids), Measurements of an ion beam diameter extracted into air through a large-bore metal capillary, 2014
• 日本物理学会 2014年秋季大会, 大口径メタルキャピラリにより大気圧雰囲気下に引き出されたイオンビームのエネルギー分布, 2014
• 日本物理学会 2014年秋季大会, 大口径メタルキャピラリにより大気圧中に引き出されたイオンビーム径の評価, 2014
• 原子衝突学会第39回年会, Energy distributions of an ion beam extracted into air with the large bore metal capillary, 2014
• 原子衝突学会第39回年会, Measurements of an ion beam diameter extracted into air through a large-bore metal capillary, 2014
• ICACS (the International Conference on Atomic Collisions in Solids), Energy distribution of an ion beam extracted into air with a large bore metal capillary, 2014
• ICACS (the International Conference on Atomic Collisions in Solids), Measurements of an ion beam diameter extracted into air through a large-bore metal capillary, 2014
• 日本物理学会 第68回年次大会, 炭素薄膜からの二次電子収量における透過陽子の出射角に対する依存性, 2013
• 日本物理学会 2013年秋季大会, 1MeV/uの軽イオン透過による炭素薄膜からの二次電子放出の比較II, 2013
• 日本物理学会 2013年秋季大会, 高速イオン衝突による分子解離現象の解明I, 2013
• Joint Symposium on Collision Processes of Highly-Charged Ions and Related Topics, Transmission property and its applications of MeV ion beams with various capillaries, 2012
• 日本物理学会 第67回年次大会, 薄膜からの二次電子放出の前方-後方相関における透過陽子の出射角に対する依存性, 2012
• 日本物理学会 第67回年次大会, 各種キャピラリによるMeVイオンビームの透過特性とその応用III, 2012
• 日本物理学会 第67回年次大会, 4π検出器を用いた低エネルギー多価イオン・分子衝突における分子解離の研究II, 2012
• 原子衝突学会第３７回年会, 大気圧中における各種キャピラリを透過した MeV イオンビームの透過特性とその応用, 2012
• 16th International conference on the physics of highly chaged ions, Effective air thickness in a glass and a metal capillaries for the in-air material analysis, 2012
• 日本物理学会 2012年秋季大会, 各種キャピラリによるMeVイオンビームの透過特性とその応用Ⅳ, 2012
• Joint Symposium on Collisions of Highly-Charged Ions with Molecules and Related Topics, Development of the RIMSEA detector in order to study fragmentation processes of molecular target in collisions with slow highly charged Ions, 2012
• 25th International Conference on Atomic Collisions in Solids, Measurement of an ion beam diameter extracted into air though the glass capillary, 2012
• Joint Symposium on Collision Processes of Highly-Charged Ions and Related Topics, Transmission property and its applications of MeV ion beams with various capillaries, 2012
• 16th International conference on the physics of highly chaged ions, Effective air thickness in a glass and a metal capillaries for the in-air material analysis, 2012
• Joint Symposium on Collisions of Highly-Charged Ions with Molecules and Related Topics, Development of the RIMSEA detector in order to study fragmentation processes of molecular target in collisions with slow highly charged Ions, 2012
• 25th International Conference on Atomic Collisions in Solids, Measurement of an ion beam diameter extracted into air though the glass capillary, 2012
• フォーラム21「イオンビームを用いた物理とその応用」研究会, 水素入射による炭素薄膜からの二次電子放出の前方-後方相関, 2011
• 日本物理学会 第66回年次大会, 超低エネルギー多価イオン・分子衝突ダイナミクス解明のための4π検出器の開発III, 2011
• 日本物理学会 第66回年次大会, 高速水素イオン照射による生成された２次電子のPolya分布による解析, 2011
• 日本物理学会 第66回年次大会, 水素入射による炭素薄膜からの二次電子放出, 2011
• 日本物理学会 第66回年次大会, 各種キャピラリによるMeVイオンビームの透過特性とその応用, 2011
• XXVII International Conference on Photonic, Electronic and Atomic Collisions, Development of 4π detector to clarify fragmentation dynamics of molecule in collisions with highly charged ions in ultra low energy regions, 2011
• XXVII International Conference on Photonic, Electronic and Atomic Collisions, Transmission property and its applications of MeV ion beams with various capillaries, 2011
• 原子衝突研究協会 第36回年会, 大気中における各種キャピラリを透過した MeV イオンビーム径測定, 2011
• 原子衝突研究協会 第36回年会, 超低エネルギー多価イオン・分子衝突ダイナミクス解明のための 4π検出器の開発, 2011
• 日本物理学会 2011年秋季大会, 中性水素透過による炭素薄膜からの前方と後方への二次電子放出の相関, 2011
• 日本物理学会 2011年秋季大会, 7Li3+イオン透過によって炭素薄膜から放出される二次電子のエネルギー分布測定, 2011
• 日本物理学会 2011年秋季大会, 各種キャピラリによるMeVイオンビームの透過特性とその応用II, 2011
• 日本物理学会 2011年秋季大会, 4π検出器を用いた低エネルギー多価イオン・分子衝突における分子解離の研究, 2011
• XXVII International Conference on Photonic, Electronic and Atomic Collisions, Development of 4π detector to clarify fragmentation dynamics of molecule in collisions with highly charged ions in ultra low energy regions, 2011
• XXVII International Conference on Photonic, Electronic and Atomic Collisions, Transmission property and its applications of MeV ion beams with various capillaries, 2011
• 田代 圭乃; 石井 邦和; 小川 英巳, 原子衝突学会第45回年会, 高速分子イオンの薄膜透過における後方散乱エネルギースペクトル, 09 Dec. 2020
• 久米 望未; 大塚 百恵; 石井 邦和; 小川 英巳, 原子衝突学会第45回年会, 高速イオンビームによるグラフェン膜透過モンテカルロシミュレーション, 09 Dec. 2020
• 大塚 百恵; 久米 望未; 石井 邦和; 小川 英巳, 原子衝突学会第45回年会, グラフェンシートによる高速 C イオンと Si イオンの虹散乱パターン, 09 Dec. 2020
• 柴田 美紗; 石井 邦和; 小川 英巳, 原子衝突学会第45回年会, LiH+ イオンの炭素薄膜透過における分子配向変化, 08 Dec. 2020
• 柴田美紗; 石井邦和; 小川英巳, 2020年日本物理学会秋季大会, LiH+イオンの炭素薄膜透過における分子配向変化, 08 Sep. 2020
• 大塚百恵; 久米望未; 石井邦和; 小川英巳, 2020年日本物理学会秋季大会, グラフェンシートによる高速CイオンとSiイオンの虹散乱パターン, 08 Sep. 2020
• 寺畑利美; 三浦志真子; 石井邦和; 小川英巳, 日本物理学会第75回年次大会, 高速分子イオンと分子標的との衝突における入射粒子の解離過程が及ぼす標的解離パターンへの影響, 16 Mar. 2020
• 福永結衣; 大塚百恵; 石井邦和; 小川英巳, 日本物理学会第75回年次大会, グラフェンシートによる炭素イオンの虹散乱パターンの観測, 16 Mar. 2020
• 柴田美紗; 奥山紗帆; 石井邦和; 小川英已, 日本物理学会第75回年次大会, LiH+イオンの炭素薄膜透過における分子配向変化の研究, 16 Mar. 2020
• M. Otsuka; Y. Fukunaga; K. Ishii; H. Ogawa, 23rd International Workshop on Inelastic Ion-Surface Collisions, Comparison of Experimental and Simulated Rainbow Scattering Patterns of Silicon Ions by Graphene Sheet, 20 Nov. 2019
• Yui Fukunaga; M. Otsuka; K. Ishii; H. Ogawa, 23rd International Workshop on Inelastic Ion-Surface Collisions, Charge State Dependence of Incident Ions for Scattering Pattern by Graphene Sheet, 20 Nov. 2019
• 三浦 志真子; 寺畑 利美; 石井 邦和; 小川 英巳, 原子衝突学会第44回年会, 高速分子イオン・標的分子衝突における入射分子の解離パターンの識別, 05 Sep. 2019
• 寺畑 利美; 三浦 志真子; 石井 邦和; 小川 英巳, 原子衝突学会第44回年会, 高速分子イオンと分子標的との衝突における入射粒子の配向が及ぼす 標的解離パターンへの影響, 05 Sep. 2019
• 福永 結衣; 大塚 百恵; 石井 邦和; 小川 英巳, 原子衝突学会第44回年会, グラフェンシートによる散乱パターンの入射イオンの価数依存性, 05 Sep. 2019
• 政次美咲; 寺畑利美; 石井邦和; 小川英巳, 日本物理学会第74回年次大会, 高速分子イオンとCO2標的との衝突における立体的衝突現象の解明, 15 Mar. 2019
• 森本夏聖; 小川英巳A; 石井邦和A; 金子敏明, 日本物理学会第74回年次大会, H2+入射による炭素薄膜からの二次電子放出の個数分布における分子効果, 14 Mar. 2019
• 三浦志真子; 伊藤優奈; 石井邦和; 小川英巳, 日本物理学会第76回年次大会, 高速分子イオン衝突における標的分子の解離度合いの入射分子種及び配向依存性, 12 Mar. 2021
• 久米望未; 李澤寧; 石井邦和; 小川英巳, 日本物理学会第77回年次大会, 高速イオンビームによるグラフェン膜透過後の散乱パターン, Oral presentation, 15 Mar. 2022, 15 Mar. 2022, 19 Mar. 2022
• 田代圭乃; 石井邦和; 小川英己, 日本物理学会第77回年次大会, 高速分子イオンを用いた後方散乱エネルギースペクトルへのクーロン爆発の寄与, 15 Mar. 2022, 15 Mar. 2022, 19 Mar. 2022
• 伊藤 優奈; 石井 邦和; 小川 英巳, 原子衝突学会第46回年会, 高速原子イオン衝突による六フッ化硫黄の解離過程, Poster presentation, 27 Oct. 2021
• 田代 圭乃; 石井 邦和; 小川 英巳, 原子衝突学会第46回年会, 高速分子イオンの薄膜透過における後方散乱エネルギースペクトル, 27 Oct. 2021
• 李 澤寧; 久米 望未; 石井 邦和; 小川 英巳, 原子衝突学会第46回年会, 高速イオンによるグラフェン膜透過後の虹散乱パターン ~ハーツラスを用いた散乱パターンの観測~, Poster presentation, 27 Oct. 2021
• 上野 明日香; 石井 邦和; 小川 英巳, 原子衝突学会第46回年会, LiH+イオンの炭素薄膜透過におけるウェイク効果による配向変化, Poster presentation, 27 Oct. 2021
• 久米 望未; 李 澤寧; 石井 邦和; 小川 英巳, 原子衝突学会第46回年会, 高速イオンによるグラフェン膜透過後の虹散乱パターン ~近接衝突による散乱パターンの比較~, Poster presentation, 27 Oct. 2021
• 富永聡美; 石井邦和, 日本物理学会2023年春季大会, グラフェン標的透過後におけるLi2+の荷電状態と入射分子配向との相関, 22 Mar. 2023
• 李澤寧; 渡邉七海; 石井邦和, 日本物理学会2022年秋季大会, 高速イオンビームによる単層グラフェン透過後の散乱現象, 14 Sep. 2022
• 伊藤優奈; 山野優里子; 石井邦和, 日本物理学会2022年秋季大会, 高速Li2+ － 多原子分子衝突系における解離過程の相関, 14 Sep. 2022
• 上野明日香; 今枝京香; 石井邦和, 原子衝突学会第47回年会, LiH+イオンの炭素薄膜透過におけるウェイク効果による配向変化, 08 Sep. 2022
• 伊藤優奈; 山野優里子; 石井邦和, 原子衝突学会第47回年会, 高速Li2 + - 多原子分子衝突系における解離過程の相関, 08 Sep. 2022
• 李澤寧; 渡邊七海; 石井邦和, 原子衝突学会第47回年会, 高速イオンビームによる単層グラフェン透過後の虹散乱現象, 08 Sep. 2022
• 山野優里子; 熊谷嘉晃; 石井邦和, 原子衝突学会第48回年会, 希ガス原子のイオン化に対する高速分子イオンの配向依存性の解明, 25 Nov. 2023
• 齊藤かなえ; 今枝京香; 熊谷嘉晃; 石井邦和, 原子衝突学会第48回年会, 高速分子イオン衝突によるエネルギーストラグリング, 25 Nov. 2023
• 今枝京香; 齊藤かなえ; 熊谷嘉晃; 石井邦和, 原子衝突学会第48回年会, 高速分子イオンを用いた RBS による膜厚の絶対値測定, 25 Nov. 2023
• N. Watanabe; M. Otsuka; Y. Fukunaga; N. Kume; Z. Li; Y. Kumagai; K. Ishii, IBA & PIXE 2023, Rainbow scattering of ion beam by graphene sheet, 12 Oct. 2023
• Kyoka Imaeda; Kanae Saito; Yoshiaki Kumagai; Kunikazu Ishii, IBA & PIXE 2023, Dissociation phenomena of LiH+ ion by carbon thin film penetration, 12 Oct. 2023
• 渡邉七海; 石井邦和; 熊谷嘉晃, 日本物理学会第78回年次大会, 高速イオンを用いたグラフェン透過後の虹散乱現象, 16 Sep. 2023
• 山野優里子; 石井邦和; 熊谷嘉晃, 日本物理学会第78回年次大会, 高速分子イオンと原子標的との衝突における立体的衝突現象の解明, 16 Sep. 2023

Works

• チャネリング コヒーレント電離による 同重体分別の基礎研究, Apr. 2015, Mar. 2017
• 重水素を含むプラズマ関連分子の解離過程の研究, Apr. 2010, Mar. 2011
• 重水素を含むプラズマ関連分子の解離過程の研究, Apr. 2009, Mar. 2010

Research Projects

• 2004, 2005, 低速多価イオン入射における物理現象, 0, 0, 0, Competitive research funding
• 2004, 2005, 高速イオンビーム入射における物理現象, 0, 0, 0, Competitive research funding
• 2004, 2005, A phenomenon by low energy highly charged ions, 0, 0, 0, Competitive research funding
• Grant-in-Aid for Scientific Research (C), 01 Apr. 2017, 31 Mar. 2020, 17K05127, Fundamental Study on the Production of a Excited Ion Beam by Means of Nano-Periodic Structure, FUJITA Natsuko, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Japan Atomic Energy Agency, 4810000, 3700000, 1110000, Scientific and technical bases to produce a particle beam consisting of excited ions have been successfully created. The strongest candidate method for production of the excited ion beam is resonant coherent excitation (RCE). The RCE is known as an internal excitation of a channeled ion passing through a static periodic field formed by lattice structure in the crystal, and occurs when the perturbation frequency felt by the ion corresponds to the relevant internal energy difference. In order to make full use of the effect of the RCE, avoidance of the random interaction with electrons in the solid is crucial; thus, it is desired that ions are made to glide above the surface with periodic structure. In this project, for a creation of scientific and technical bases, we have clearly observed an RCE in a AMS system, and have constructed a test machine for studying ion-glide above the surface., kaken

  対象リソースIRI
• 基盤研究(C), 01 Apr. 2016, 31 Mar. 2019, 16K05029, ナノ周期構造体を用いた励起イオンビームの生成に関する基礎研究, 松原 章浩; 石井 邦和; 藤田 奈津子, 日本学術振興会, 科学研究費助成事業, 国立研究開発法人日本原子力研究開発機構, 4940000, 3800000, 1140000, kaken

  対象リソースIRI
• Grant-in-Aid for Young Scientists (B), 2007, 2009, 19740247, Yield measurement of secondary particles from liquid surface under heavy ion bombardment, ISHII Kunikazu, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Nara Women's University, 3870000, 3300000, 570000, We have studied in order to measure absolute yields of secondary particles from various surface including liquid material. At first we have measured size distributions of extracted ion beam using glass capillary. As a result, we have found the 'halo' components in size distributions via glass capillary. In order to obtain an ion beam without 'halo' components, we have developed an extraction technique of ion beam using an metal capillary and an in-air-material analysis technique with this capillary., kaken

  対象リソースIRI
• 基盤研究(C), 2005, 2007, 17540370, アルゴンまでの軽い原子及び軽い原子からなる分子の平均励起エネルギー, 坂本 直樹; 小川 英巳; 石井 邦和, 日本学術振興会, 科学研究費助成事業, 奈良女子大学, 3720000, 3600000, 120000, 前年度の成果,ダブルスキャッタラーを用いることで気体標的に対しても固体標的の場合に比較出来る1%以下の精度で阻止能が測定可能なこと及び充分な精度と信頼度で入射陽子のエネルギーが決定出来ることが明らかになった,の上で今年度は本格的な阻止能測定に取り組むこととなった。標的としてどの様なものを選択するかという段階で、本研究の前段階とも言える仕事について少し述べておきたい。(本研究の成果ではないが、非常に密接な関係があると考えられるので、研究発表の所に挙げさせて頂いた。)現時点で最も信頼度が高いと考えられる振動子強度に基づいた原子及び分子の平均励起エネルギーの計算を行った仕事である。32種類の原子及び分子の平均励起エネルギーを計算し、それらの系統的な振る舞いを詳細に議論したものである。この仕事によってどの様な標的を選択するのがより実りの大きな研究が可能であるかを検討した。個人的に最も興味を引かれた標的は有毒な気体を取り扱わないといけないことが分かった。我々の所有している設備では有毒ガス標的の使用は困難であることから、本研究においては次善の選択として炭化水素系の系統性に注目して、前年度のメタンガスに対する測定を活かした、エタン,プロパン,ブタンガスの阻止能を測定することとした。 前述の計算では、メタン,エタンガスの平均励起エネルギーは評価されていてI/Zの値は分子中の全電子数の増加とともに単調に減少していくことが示されている。本研究においてはその延長上にプロパン、ブタンの平均励起エネルギーが測定されることとなり、計算で示された系統的な振る舞いがどの様な形で系の電子数の増加とともに変化していくのかに関して一つの解答を与えてくれることになる。同様な系統性は類似の分子グループに対しても成り立つことが予想されるので、他の標的分子群に対しても指針を与える結果が得られることが期待出来る。 実験は0.6MeV-3.0MeV陽子に対するエタンガス、プロパンガス、n-ブタンガスの阻止能を0.2MeV毎に測定した。測定された阻止能の精度はおよそ0.5%と評価している。得られた阻止能データをBethe-Blochの阻止能公式を用いて解析し、平均励起エネルギーを求めた。平均励起エネルギーの算出に用いた阻止能データは主に1MeV以上のものである。これは、理論式が高速陽子に対して良い近似で成立するものであることによる。得られたI/Zの系統性は、振動子強度に基づいた計算結果と調和するものであり、それらの外挿値としても合理的なものであることが判った。, kaken

  対象リソースIRI

Ⅲ．社会連携活動実績

１．公的団体の委員等（審議会、国家試験委員、他大学評価委員，科研費審査委員等）

• Apr. 2018, Mar. 2019, Society
• Apr. 2015, Mar. 2017, Society
• Apr. 2011, Mar. 2013, Society
• Apr. 2008, Mar. 2012, Society
• Nov. 2009, Oct. 2010, Society
• Sep. 2009, Society
• Apr. 2022, Mar. 2024, Society
• Apr. 2022, Mar. 2023, Society
• Apr. 2022, Mar. 2024, Society
• Apr. 2020, Mar. 2022
• Apr. 2019, Mar. 2021, Society