Papers - IGARASHI Akinori
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Cross Section Calculation of H-He Collisions using Three-Electron Close-Coupling Method Reviewed
Akinori and Daiji Kato
Few-body systems 66 3 2024.12
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Cross sections in He+ +He collision at intermediate energies Reviewed
A. Igarashi and D. Kato
Eur. Phys. J. D 78 79 2024.6
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Two-center and path interference in dissociative capture in p+ H2 collisions Reviewed International coauthorship
S. Bastola, M. Dhital, B. Lamichhane, A. Silvus,R. Lomsadze, A. Hasan, A. Igarashi, and M. Schulz
Physical Review A 109 012821 2024.1
Language：English Publishing type：Research paper (scientific journal)
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Projectile angular distributions in He+ + H collisions Reviewed
A. Igarashi and D. Kato
Physica Scripta 99 015404 2023.12
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
Wehave calculated the differential cross sections for the elastic, excitation toH(n=2), and electrontransfer
processes in He++Hcollision using a semiclassical atomic-orbital close-coupling method within two-electron treatment. The calculations have been implemented with four different basis sets to see the effects of electron-exchange, electron-transfer channels, and continuum channels. The results are compared with those of experiments and other calculations. -
Cross sections in H+ +He collision at intermediate energies Reviewed
A. Igarashi and D. Kato
The European Physical Journal D 77 190 2023.10
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
An atomic-orbital close-coupling method is applied to H++He collisions for collision energies 1–
200 keV. We show the cross sections for the elastic scattering, excitation to He(21S) and He(21P), electron
capture to H(2 s) and H(2p), and so on. Depending on the processes, the present results agree with some experiments, but disagree with some. Discrepancies are also found between present results and those of
existent two-electron calculations for electron capture to H(2 s) and excitation to He(21S) and He(21P) below 20 keV. -
Cross sections in He++H collisions for the energy region 1-100 keVu-1 Reviewed
A Igarashi and D Kato
Physica Scripta 98 ( 055402 ) 2023.4
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Igarashi A., Kato D.
Physica Scripta 98 ( 4 ) 2023.3
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Physica Scripta
The collisions between proton and helium are treated with a semi-classical atomic orbital expansion for proton incident energies 5-150 keV considering two-electrons explicitly. Differential cross sections with respect to the projectile scattering angle are calculated for elastic scattering, 21S and 21P excitation, single electron capture, and single ionization. The agreement with experiments are mostly good, but non-negligible discrepancies are seen for the elastic scattering and the single electron capture with target excitation.
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Fully differential investigation of two-center interference in dissociative capture in p + H2 collision Invited Reviewed International coauthorship
S. Bastola, M. Dhital, B. Lamichhane, A. Silvus, R. Lomsadze, J. Davis, A. Hasan, A. Igarashi, and M. Schulz
Phys. Rev. A 105 032805 2022.3
Language：English Publishing type：Research paper (scientific journal)
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イオンと原子・分子の電離及び電荷移行衝突における微分断面積 Reviewed
五十嵐 明則
原子衝突学会誌 しょうとつ 18 ( 5 ) 106 - 117 2021.9
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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Projectile angular distribution for electron capture in p + H2 collision considering the vibrational motion Reviewed
A Igarashi
Journal of Physics B: Atomic, Molecular and Optical Physics 53 ( 22 ) 225205 2020.10
Language：English Publishing type：Research paper (scientific journal)
We show the results calculated with improved treatment for the interaction between incident proton and nuclei in H2 over our previous work [2019 J. Phys. B: At. Mol. Opt. Phys. 52 075204] for electron capture process from H2 by proton with including the vibrational motion of molecules. Moreover, the differential cross sections with respect to the projectile scattering angle are calculated and the results are compared with experimental data. It is found that the inclusion of vibrational motion of molecules is essential to reproduce the experimental angular distribution for the fixed molecular orientation parallel to the transverse momentum transfer.
DOI： https://iopscience.iop.org/article/10.1088/1361-6455/abbe2a
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Fully differential cross sections for ionization of Li(2s) and Li(2p) by 16 MeV Li2+ impact Reviewed
A Igarashi and L Gulyas
Journal of Physics B: Atomic, Molecular and Optical Physics 53 ( 7 ) 075203 2020.3
Language：English Publishing type：Research paper (scientific journal)
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Effective fully differential cross-section in single ionization of helium by fast ions Reviewed
A Igarashi and L Gulyas
Journal of Physics B: Atomic, Molecular and Optical Physics 52 ( 24 ) 245203 2019.11
Language：English Publishing type：Research paper (scientific journal)
Fully differential measurements for the single ionization of helium by fast ion impacts are discussed by evaluating effective fully differential cross-sections (EFDCSs) proposed by Kouzakov (2017 Eur. Phys. J. D 71 63) where the coherence properties of the projectile and the target beams are taken into account. The present evaluation of the EFDCS is extended by including instrumental uncertainties. The experimental data are compared with theoretical results where the electron emission is described within the framework of the continuum distorted wave with eikonal initial state (CDW-EIS) method. In most cases, the obtained EFDCSs agree with the experimental data better than those evaluated without considering coherence properties and inclusion of experimental uncertainties.
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Vibrationally resolved capture cross section in p + H2 collision Reviewed
A Igarashi and L Gulyas
J. Phys. B: At. Mol. Opt. Phys 52 075204 2019.3
Language：English Publishing type：Research paper (scientific journal)
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Theoretical investigation of the fully differential cross sections for single ionization of He in collisions with 75-keV protons Reviewed
L. Gulyas, S. Egri, and A. Igarashi
Physical review A 99 032704 2019.3
Language：English Publishing type：Research paper (scientific journal)
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Collision Strengths and Effective Collision Strengths for Allowed Transitions among the n < 5 Degenerate Levels of Atomic Hydrogen Reviewed
Kanti M. Aggarwal, Ryu Owada and Akinori Igarashi
Atoms 6 ( 3 ) 37 2018.7
Language：English Publishing type：Research paper (scientific journal)
We report calculations of collision strengths and effective collision strengths for 26 allowed
transitions among the n < 5 degenerate levels of atomic hydrogen for which the close-coupling (CC) and
Born approximations have been used. Results are listed over a wide range of energies (up to 100 Ryd)
and temperatures (up to 107 K), sufficient for applications over a variety of plasmas, including fusion.
Similar results have also been calculated for deuterium, but they negligibly differ with those of hydrogen.DOI： 10.3390/atoms6030037
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Differential cross sections for ionizations of H and H<inf>2</inf>by 75 keV proton impact Reviewed
Igarashi A., Gulyás L.
Journal of Physics B: Atomic, Molecular and Optical Physics 51 ( 3 ) 035201 2018.1
Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Physics B: Atomic, Molecular and Optical Physics
© 2018 IOP Publishing Ltd. We have calculated total, partial and fully differential cross sections (FDCSs) for ionizations of H and H 2 by 75 keV proton impact within the framework of the continuum-distorted-wave-eikonal-initial-state (CDW-EIS) approximation. Applying the single active electron model, the interaction between the projectile and the target ion is taken into account in the impact parameter picture. Extension of the CDW-EIS model to the molecular target is performed using the two-effective center approximation. The obtained results are compared with those of experimental and other theoretical data when available. The agreements between the theories and the experimental data are generally reasonable except for some cases of the FDCSs.
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Differential cross sections for electron capture in p + H<inf>2</inf>collisions Reviewed
Igarashi A., Gulyás L., Ohsaki A.
European Physical Journal D 71 ( 11 ) 2017.11
Language：English Publishing type：Research paper (scientific journal) Publisher：European Physical Journal D
© 2017, EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature. Abstract: Projectile angular distributions for electron capture in p + H 2 collisions at 25 and 75 keV impact energies, measured by Sharma et al. [Phys. Rev. A 86, 022706 (2012)], are calculated using the CDW-EIS and eikonal approximations. Angular distributions evaluated in the CDW-EIS approximation are in good agreement with the experimental data measured for coherent projectile beams. Incoherent projectile scatterings are also considered by folding the coherent angular distributions over the transverse momentum distribution of the projectile wave-packet. Reasonable agreements with the measurements are obtained only with coherence parameters very different from those reported in the experiments. Graphical abstract: [Figure not available: see fulltext.] .
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Radiative Rates and Electron Impact Excitation Rates for Transitions in He II Reviewed
K. M. Aggarwal, A. Igarashi, F. P. Keenan and S. Nakazaki
Atoms 5 ( 2 ) 19 2017.5
Language：English Publishing type：Research paper (scientific journal)
We report calculations of energy levels, radiative rates, collision strengths and effective
collision strengths for transitions among the lowest 25 levels of the n 5 configurations of He II. The
general-purpose relativistic atomic structure package (GRASP) and Dirac atomic R-matrix code (DARC)
are adopted for the calculations. Radiative rates, oscillator strengths and line strengths are reported
for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2) and magnetic quadrupole
(M2) transitions among the 25 levels. Furthermore, collision strengths and effective collision strengths
are listed for all 300 transitions among the above 25 levels over a wide energy (temperature) range up
to 9 Ryd (105.4 K)DOI： 10.3390/atoms5020019
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Differential cross sections for the single ionization of H2 by 75keV proton impact Reviewed
A Igarashi and L Gulyas
J. Phys. B: At. Mol. Opt. Phys. 50 035201 2017.1
Language：English Publishing type：Research paper (scientific journal)
We have calculated the double and triple differential cross sections for electron ejection with
energy of 14.6 eV in single ionization of H2 by 75 keV proton impact. A molecular version of the
continuum distorted wave-eikonal initial state approach is applied, where the interaction between
the projectile and the residual molecular ion is considered more properly than in previous
applications of the method. For triple differential cross sections, the present results are in better
agreement with the experimental data than those of other descriptions when large momentum
transfer values are considered. For double differential cross sections the experimental data are
reproduced quite well for both coherent and incoherent proton beams. -
Production Ratio for Para- and Ortho-Ps in Photodetachment of Ps#U- Reviewed
A. Igarashi
Few-Body Systtems 58 1 - 5 2016.11
Language：English Publishing type：Research paper (scientific journal)
Para- and ortho-Ps atoms are formed in the photodetachment of positronium negative ion. Since
the lifetime against the pair annihilation is much shorter for para-Ps(ns) than for ortho-Ps(ns), the production
ratio of para- and ortho-Ps atoms is important for the photodetachment experiments.We have derived the ratio
explicitly. -
Broad resonances in H#U- and Ps#U-
A.Igarashi
Eur. Phys. J. D 70 216 2016.10
Language：English Publishing type：Research paper (scientific journal)
Broad resonances of H
−
and Ps
−
obtained by complex-rotation methods are treated with hyperspherical
calculations. The resonances are identified as a peak in the energy dependence of time delay
obtained in the single-channel calculation using a hyperspherical adiabatic potential curve. The peak occurs
even when the adiabatic potential is purely repulsive, because the effective potential (the sum of adiabatic
potential and adiabatic correction) is attractive relative to the potential represented by its asymptotic
form. -
ポジトロニウム負イオン Reviewed
長嶋泰之，五十嵐明則, 満汐孝治
しょうとつ 13 ( 3 ) 2016.5
Language：Japanese Publishing type：Research paper (scientific journal)
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Single and multiple electron removal and fragmentation in collisions of protons with water molecules Reviewed
L. Gulyas, S. Egri, H. Ghavaminia, and A. Igarash
Phys. Rev. A 93 032704 2016.3
Language：English Publishing type：Research paper (scientific journal)
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Differential cross sections for the ionization of H+2 by proton impact without using the two-effective center approximation Reviewed
A Igarashi, L Gulyas and A Ohsaki
J. Phys. B: At. Mol. Opt. Phys. 49 035204 2016.1
Language：English Publishing type：Research paper (scientific journal)
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Resonance parameters for doubly excited state of H_2 Reviewed
Akinori Igarashi
Journal of Physics B: Atomic, Molecular and Optical Physics 48 105202 2015.4
Language：English Publishing type：Research paper (scientific journal)
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Cross sections for dissociative ionization and dissociative excitation of H+2 by single photon absorption Reviewed
Akinori Igarashi
The European Physical Jorunal D 68 ( 9 ) 266 2014.9
Language：English Publishing type：Research paper (scientific journal)
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Calculation of electroni states of H_2 by a molecular-basis expansion method
Akinori Igarashi and Yuuichi Kuwayama
J. Phys. Soc. Jpn 83 ( 5 ) 054302(1-6) 2014.4
Language：English Publishing type：Research paper (scientific journal)
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原子における自由－自由遷移の光吸収断面積 Reviewed
五十嵐 明則
原子衝突学会誌「しょうとつ」2013年第10巻第3号 10 ( 3 ) 2013.5
Language：Japanese Publishing type：Research paper (scientific journal)
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Two-Photon Detachment Cross Section of the Positronium Reviewed
Akinori Igarashi
Few body systems 2013.2
Language：English Publishing type：Research paper (scientific journal)
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Calculation of two-photon detachment cross sections of the positronium negative ion Reviewed
Akinori Igarashi
Journal of Physics B: Atomic, Molecular and Optical Physics 45 ( 24 ) 245201 2012.12
Language：English Publishing type：Research paper (scientific journal)
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Double and transfer ionization in collisions of He with bare ions Reviewed
L. Gulyas, A. Igarashi, T. Kirchner
Phy. Rev. A 86 ( 2 ) 024701(1-5) 2012.8
Language：English Publishing type：Research paper (scientific journal)
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Projectile angular distribution in single electron capture from helium by fast protons Reviewed
A. Igarashi, L. Gulyas, and A. Ohsaki
The European Physical Journal D 66 ( 3 ) 79(1-6) 2012.3
Language：English Publishing type：Research paper (scientific journal)
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Projectile scattering in one- and two-electron transitions Reviewed
L Gulyas, A Igarashi and T Kirchner
J. Phys. B: At. Mol. Opt. Phys 45 ( 7 ) 085205 - (11) 2012.3
Language：English Publishing type：Research paper (scientific journal)
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Elastic Scattering and 3p Excitation from Ground Stateof Sodium Isoelectronic Sequence by Electron Impact Reviewed
Ken-ichi AKITA, Shinobu NAKAZAKI, Akinori IGARASHI, and Akihiko OHSAKI
Journal of the Physical Society of Japan ８０ ( 10 ) 114301 - (1-6) 2011.10
Language：English Publishing type：Research paper (scientific journal)
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Photodetachment of positronium negative ions Reviewed
K. Michishio, T. Tachibana, H. Terabe, A. Igarashi, 他５名
Physsical Review Letters 106 ( 15 ) 153401(4pages) 2011.4
Language：English Publishing type：Research paper (scientific journal)
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Study of Angular Momentum Transfer in Electron-Impact 2s -> 2p Excitation Reviewed
K. Akita, S. Nakazaki, and A. Igarashi
Journal of the Physical Society of Japan 80 ( 3 ) 034302(7pages) 2011.2
Language：English Publishing type：Research paper (scientific journal)
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Two-electron cusp in the double ionization of helium Reviewed
L. Gulyas, L. Sakardi, A.Igarashi. T. Kirchner
Physical Review A 82 ( 3 ) 032705 - 9pages 2010.9
Language：English Publishing type：Research paper (scientific journal)
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Effective collision strengths for optically allowed transitions among degenerate Reviewed
K. Hamada, K.M. Aggarwal, K. Akita, A. Igarashi, F.P. Keenan, S. Nakazaki
Atomic Data and Nuclear Data Tables 96 ( 5 ) 481 - 530 2010.9
Language：English Publishing type：Research paper (scientific journal)
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Annihilation cross sections of protonium by ion impact: scaling law with respect to the principal quantum number Reviewed
L Gulyás , A Igarashi and A Ohsaki
J. Phys. B: At. Mol. Opt. Phys. 43 ( 5 ) 055203-1 - 055203-7 2010.3
Language：English Publishing type：Research paper (scientific journal)
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Excitation rates for optically allowed transitions among degenerate Reviewed
K. Hamada et al.
Journal of Physics: Conference Series 194 ( 6 ) 06209 - 062009 2009.12
Language：English Publishing type：Research paper (international conference proceedings)
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Resonance states of unnatural parity in positronic atoms Reviewed
Isao Shimamura, Hiroaki Wakimoto, and Akinori Igarashi
Phys. Rev. A 80 ( 3 ) 032708-1 - 032708-10 2009.9
Language：English Publishing type：Research paper (scientific journal)
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Angular momentum transfer and porlarization degree of ions with one-valence electron by electron impact Reviewed
Kenichi Akita , Takeshi Kai , Shinobu Nakazaki and Akinori Igarashi
Journal of Physics: Conference Series 163 ( 1 ) 012032-1 - 012032-4 2009.6
Language：English Publishing type：Research paper (international conference proceedings)
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Angular momentum transfer and polarization degree of ions with two-valence electrons by electron impact Reviewed
Kenichi Akita , Takeshi Kai , Shinobu Nakazaki and Akinori Igarashi
J. Phys.: Conf. Ser. 163 ( 1 ) 012037-1 - 012037-4 2009.6
Language：English Publishing type：Research paper (international conference proceedings)
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Annihilation cross section of protonium by electron impact Reviewed
A. Igarashi, L. Gulyas
Journal Physics of B: MOLECULAR AND OPTICAL PHYSICS 42 ( 3 ) 035201-1 - 035201-9 2009.2
Language：English Publishing type：Research paper (scientific journal)
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Annihilation of protonium by charged particle impact Reviewed
A. Igarashi, L. Gulyas
Nuclear Instruments and Methods in Physics Reasrech B 267 354 - 357 2009.1
Language：English Publishing type：Research paper (scientific journal)
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Radiative rates and electron impact excitation rates for H-like Ar XVIII
K. M. Aggarwal, K. Hamada, A. Igarashi, V. Jonauskas, F. P. Keenan, and S. Nakazaki
Astronomy & Astrophysics 487 ( 1 ) 383 - 388 2008.8
Language：English Publishing type：Research paper (scientific journal)
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Radiative rates and electron impact excitation rates for H-like Fe XXVI Reviewed
K. M. Aggarwal, K. Hamada, A. Igarashi, V. Jonauskas, F. P. Keenan, and S. Nakazaki
Astronomy & Astrophysics 484 ( 3 ) 879 - 885 2008.6
Language：English Publishing type：Research paper (scientific journal)
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Application of hyperspherical close-coupling method to antiproton collisions with muonic hydrogen
A. Igarashi and N. Toshima
The European Physical Journal D 46 ( 3 ) 425 - 430 2008.3
Language：English Publishing type：Research paper (scientific journal)
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Effective collision strengths for allowed transitions among the n < 5 degenerate levels of Al XIII Reviewed
K. M. Aggarwal, A. Igarashi, F. P. Keenan, and S. Nakazaki
Astronomy & Astrophysics 479 ( 2 ) 585 - 588 2008.2
Language：English Publishing type：Research paper (scientific journal)
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Single and double ionization of helium: the axial symmetry
L Gulyás, A Igarashi, P D Fainstein and T Kirchner
J. Phys. B: At. Mol. Opt. Phys. 41 ( 2 ) 025202 - 025210 2008.1
Language：English Publishing type：Research paper (scientific journal)
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Kinetically balanced B-spline expansions in radial Dirac equation Reviewed
A. Igarashi
J. Phys. Soc. of Japan 76 ( 5 ) 54301-1 - 54301-6 2007.4
Language：English Publishing type：Research paper (scientific journal)
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Time-delay matrix analysis of several overlapping resonances: applications to the helium atom and the positronium negative ion. Reviewed
K. Aiba, A. Igarashi and I. Shimamura
Journal of Physics B 40 ( 1 ) F9 - F17 2007.1
Language：English Publishing type：Research paper (scientific journal)
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Evaluation of the single ionisation transition amplitude using the CDW-EIS model within the framework of the impact-parameter method Reviewed
A. Igarashi, L. Gulyas and P.D. Fainstein
The European Physical Journal D 42 ( 1 ) 73 - 77 2007.1
Language：English Publishing type：Research paper (scientific journal)
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Three-body muon-transfer collisions from hydrogen isotope to He2+ and Li3+ ions Reviewed
A. Igarashi and N. Toshima
European Physics Journal D 40 ( 2 ) 176 - 179 2006.11
Language：English Publishing type：Research paper (scientific journal)
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B-Spline Expansions in Radial Dirac Equation Reviewed
A. Igarashi
J. Phys. Soc. of Japan 75 ( 11 ) 114301-1 - 114301-8 2006.11
Language：English Publishing type：Research paper (scientific journal)
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Double ionization of helium by fast ion impact: Reexamination of the correlation function Reviewed
L. Gulyas, A. Igarashi, and T. Kirchner
Physical Review A 74 ( 3 ) 32713-1 - 32713-9 2006.9
Language：English Publishing type：Research paper (scientific journal)
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Eigenvalues of the time-delay matrix in overlapping resonances
Isao Shimamura, J F McCann and A Igarashi
Journal of Physics B 39 ( 6 ) 1847 - 1854 2006.3
Language：English Publishing type：Research paper (scientific journal)
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Protonium Formation in p- + H(1s) collision
A. Igarashi and N. Toshima
AIP conference Proceedings 796 272 - 275 2005.5
Language：English Publishing type：Research paper (other academic)
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Electron-exchange effect in electron-impact excitation of the n=2 fine-structure levels Reviewed
A. Igarashi, A. Ohsaki and S. Nakazaki
Journal of Physical Society of Japan 74 ( 1 ) 321 - 325 2005.1
Language：English Publishing type：Research paper (scientific journal)
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Time-delay matrix analysis of resonances:applications to the psitronium negative ion Reviewed
共著者：A. Igarashi, I. Shimamura
J. Phys. B: At. Mol. Opt. Phys. 37 4221-4237 37 ( 21 ) 4221 - 4237 2004.10
Language：English Publishing type：Research paper (scientific journal)
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Stable complex rotation eigenvalues that correspond to no full resonances in scattering: Examples in positron scattering be the helium ion Reviewed
共著者：A. Igarashi, I. Shimamura
Phys. Rev. A 70 ( 1 ) 12706-1 - 12706-5 2004.7
Language：English Publishing type：Research paper (scientific journal)
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Ionization cross section of helium and hydrogenic ions by antiproton impact Reviewed
A. Igarashi, S. Nakazaki and A. Ohsaki
Nuclear Instruments and Methods B 214 135 - 138 2004.1
Language：English Publishing type：Research paper (scientific journal)
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Inseparable positron annihilation and positronium formation in positron-atom collisions: Description in terms of an absorbtion potential
共著者：A. Igarashi, M. Kimura,I. Shimamura, N. Toshima
Phys. Rev. A6842716(1-8) 2003.10
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Positron annihilation and positronium formation－A unified theory in terms of a complex potential
共著者：A. Igarashi, M. Kimura, I. Shimamura, N. Toshima
BUTSURI 58(7)528-532 2003.7
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Proton-Impact excitation between the n=2 fine-structure levels of hydrogenic ions
共著者：A. Igarashi, A. Ohsaki, S. Nakazaki
J. Phys. Soc. Jpn 72(5), 1073-1079 2003.5
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Electron-impact excitations between the n=2 fine-structure levels of hydrogenic ions
共著者：A.Igarashi, Y. Horiguchi, A. Ohsaki, S. Nakazaki
J. Phys. Soc. Jpn,72 (2), 307-312 2003.2
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Unified treatment of positron annihilation and positonium formationr
共著者：A. Igarashi, M.Kimura,I. Shimamura
Phys. Rev. Lett. 89(12), 123201 (1-4) 2002.9
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Radial integrals in the Coulomb-Born Approximation:Multipole transitions Reviewed
A. Ohsaki, A. Igarashi, T. Kai, S. Nakazaki
Computer Physics Communications 147 ( 3 ) 826 - 833 2002.9
Language：English Publishing type：Research paper (scientific journal)
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B-spline expansion of scattering equations for ionization of atomic hydrogen by antiproton impact
共著者：J. Azuma, N. Toshima, K. Hino, A. Igarashi
Phys. Rev. A, 64(6), 62704 (1-9) 2001.12
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Nonadiabatically coupled hyperspherical equations applied to the collisional spin flip of muonic hydrogen
共著者：A. Igarashi, M. Faifman, I. Shimamura
Hyp. Interact. 138,77-83 138 ( 1-4 ) 77 - 83 2001.12
Language：English Publishing type：Research paper (scientific journal)
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Cross sections for electron detachment of the hydrogen negative ion and for single ionization of helium by antiproton impact
共著者：A. Igarashi, A. Ohsaki, N. Nakazaki
Phys. Rev. A, 64(4), 42717(1-4) 2001.10
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Single ionization of helium by antiproton impact
共著者：A. Igarashi, A. Ohsaki, N. Nakazaki
Phys. Rev. A, 62(5), 52722(1-5) 2000.11
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Hyperspherical calculation of H(1s) + μ+ arrangement collision cross section from threshold to 2eV
共著者： Z. X. Zhao, A. Igarashi, C. D. Lin
Phys. Rev. A, 62(4), 42706(1-5) 2000.10
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Photodetachment cross sections of the ositronium negative ion
共著者：A. Igarashi, I. Shimamura, N. Toshima
New J. Phys., 2,17 (1-14) 2000.8
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Ionization of atomic hydrogen by antiproton impact
共著者：A. Igarashi, A. Ohsaki, N. Nakazaki
Phys. Rev. A, 61(6), 62712(1-5) 2000.6
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Phase shifts of e- + Ps scatterings and photodetachment cross sections of Ps-
共著者：A. Igarashi, N. Nakazaki, A. Ohsaki
Phys. Rev. A, 61(3), 32710(1-5) 2000.3
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Full ambiguity-free quantum treatment of D+ + H(1s) charge transfer reactions at low energies
共著者：A. Igarashi, C.D. Lin
Phys.Rev. Lett., 83(15), 4041-4044 1999.11
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Hyperspherical close-coupling study of hyperfine transitions in low-energy p + pμ and e± + Ps scattering
共著者：A. Igarashi, I. Shimamura, N. Toshima
Phys. Rev. A, 58(2), 1166-1173 1998.8
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S-wave resonances in positron scattering by He+
共著者：A. Igarashi , I. Shimamura
Phys. Rev. A, 56(6), 4733-4736. 1997.12
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Criteria for the validity of the diabatic-by-sector expansion in the hyperspherical method
共著者：K. Hino, A. Igarashi, J. H. Macek
Phys. Rev. A, 56(1), 1038-1041 1997.7
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Recoil-ion momentum distribution of single-electron capture to the ground and excited states in 0.5-1 MeV/u B4+,5+-He collisions
共著者：T.Kambara, A.Igarashi, N. Watanabe, T. M.Kojima, Y. Nakai, Y. Awaya
J. Phys. B, 30 (5),221-1260 1997.3
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Hyperspherical coupled channel calculation of positronium formation in low-energy positron helium collisions
共著者：A. Igarashi, N. Toshima, T. Shirai
Phys. Rev. A, 54(6), 5004-5009 1996.12
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Excitation and Ionization of Excited Helium Atoms in Collisions with Bare Ions Reviewed
共著者：A. Igarashi, T. Shirai
Physica ScriptaT62, 95-104 T62 95 - 104 1996.1
Language：English Publishing type：Research paper (scientific journal)
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Ionization of excited hydrogen-like ions by collisions with bare ions
共著者：A. Igarashi, T. Shirai
Phys. Rev. A, 51(6), 4699-4703 1995.6
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Ionization of excited hydrogen atoms by collisions with bare ions
共著者：A.Igarashi , T. Shirai
Phys. Rev. A, 50(6), 4945-4950 1994.12
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Muon transfer and elastic scattering in t + dμ collisions at low energies
共著者：A. Igarashi , N. Toshima, T. Shirai
Phys. Rev. A, 50(6), 4951-4955 1994.12
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Hyperspherical coupled-channel study for antihydrogen formation in antiproton-pisotronium collision
共著者：A. Igarashi , N. Toshima, T. Shirai
J.Phys.B, 27(15),L497-501 1994.8
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Hypersphericalcoupled-channel study of positronium formation
共著者：A. Igarashi , N. Toshima
Phys. Rev. A, 50(1) 232-239 1994.7
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Second order Born cross sections for positronium formation in positron-hydrogen collisions
共著者：A. Igarashi , N. Toshima
Phys. Rev. A, 47(3), 2386-2388 1993.3
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Exact calculation of the second-order Born terms for exotic-atom formation into excited states
共著者：A. Igarashi , N.Toshima, T. Ishihara
Phys. Rev. A, 46(9), 5525-5530 1992.11
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Destructive and constructive interferences of the second Born amplitudes for positronium formation
共著者：A. Igarashi , N. Toshima
Phys. Rev. A, 46(3), R1159-1162 1992.8
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Double-ionization fraction of the Glauber cross section for proton and helium collisions
共著者：A. Igarashi , N. Toshima, T. Ishihara
Phys. Rev. A, 45(9), R6157-6160 1992.5
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Second Born approximation differential cross sections for p+H and p+He charge-exchange collisions
共著者：A. Igarashi , N. Toshima
Phys. Rev. A, 45(9), 6313-6317 1992.5
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Positronium formation in positron helium collision at intermediate energies
共著者：A. Igarashi, N. Toshima
Phys. Lett. A, 164(1), 70-72 1992.4