Triple Differential Study of Ionization of H₂ by Proton Impact for Varying Electron Ejection Geometries
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.
A. Hasan et al., "Triple Differential Study of Ionization of H₂ by Proton Impact for Varying Electron Ejection Geometries," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 47, no. 21, Institute of Physics Publishing, Oct 2014.
The definitive version is available at https://doi.org/10.1088/0953-4075/47/21/215201
Center for High Performance Computing Research
Keywords and Phrases
Differential Cross Section; Electron Ejection; Proton Impact; Ionization
International Standard Serial Number (ISSN)
Article - Journal
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01 Oct 2014