Triple differential study of ionization of H2 by proton impact for varying electron ejection geometries

A. Hasan; S. Sharma; T. P. Arthanayaka; B. R. Lamichhane; J. Remolina; S. Akula; D. H. Madison; M. Schulz

doi:10.1088/0953-4075/47/21/215201

Triple differential study of ionization of H2 by proton impact for varying electron ejection geometries

A. Hasan, S. Sharma, T. P. Arthanayaka, B. R. Lamichhane, J. Remolina, S. Akula, D. H. Madison, M. Schulz

Department of Physics

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21 Citations (Scopus)

Abstract

We have performed a kinematically complete experiment on ionization of H2 by 75 keV proton impact. The triple differential cross sections (TDCS) extracted from the measurement were compared to a molecular 3-body distorted wave (M3DW) calculation for three different electron ejection geometries. Overall, the agreement between experiment and theory is better than in the case of a helium target for the same projectile. Nevertheless, significant quantitative discrepancies remain, which probably result from the capture channel, which may be strongly coupled to the ionization channel. Therefore, improved agreement could be expected from a non-perturbative coupled-channel approach.

Original language	English
Article number	215201
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	47
Issue number	21
DOIs	https://doi.org/10.1088/0953-4075/47/21/215201
Publication status	Published - Nov 14 2014

Keywords

ew body problem
ionization
ully differential cross sections

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1088/0953-4075/47/21/215201

Cite this

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title = "Triple differential study of ionization of H2 by proton impact for varying electron ejection geometries",

abstract = "We have performed a kinematically complete experiment on ionization of H2 by 75 keV proton impact. The triple differential cross sections (TDCS) extracted from the measurement were compared to a molecular 3-body distorted wave (M3DW) calculation for three different electron ejection geometries. Overall, the agreement between experiment and theory is better than in the case of a helium target for the same projectile. Nevertheless, significant quantitative discrepancies remain, which probably result from the capture channel, which may be strongly coupled to the ionization channel. Therefore, improved agreement could be expected from a non-perturbative coupled-channel approach.",

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AU - Hasan, A.

AU - Sharma, S.

AU - Arthanayaka, T. P.

AU - Lamichhane, B. R.

AU - Remolina, J.

AU - Akula, S.

AU - Madison, D. H.

AU - Schulz, M.

PY - 2014/11/14

Y1 - 2014/11/14

N2 - We have performed a kinematically complete experiment on ionization of H2 by 75 keV proton impact. The triple differential cross sections (TDCS) extracted from the measurement were compared to a molecular 3-body distorted wave (M3DW) calculation for three different electron ejection geometries. Overall, the agreement between experiment and theory is better than in the case of a helium target for the same projectile. Nevertheless, significant quantitative discrepancies remain, which probably result from the capture channel, which may be strongly coupled to the ionization channel. Therefore, improved agreement could be expected from a non-perturbative coupled-channel approach.

AB - We have performed a kinematically complete experiment on ionization of H2 by 75 keV proton impact. The triple differential cross sections (TDCS) extracted from the measurement were compared to a molecular 3-body distorted wave (M3DW) calculation for three different electron ejection geometries. Overall, the agreement between experiment and theory is better than in the case of a helium target for the same projectile. Nevertheless, significant quantitative discrepancies remain, which probably result from the capture channel, which may be strongly coupled to the ionization channel. Therefore, improved agreement could be expected from a non-perturbative coupled-channel approach.

KW - ew body problem

KW - ionization

KW - ully differential cross sections

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Triple differential study of ionization of H2 by proton impact for varying electron ejection geometries

Abstract

Keywords

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