Single- and Two-Centre Effects in Fully Differential Cross Sections for Single Ionization of H₂ Molecules by 75 KeV Protons
We present theoretical calculations of single ionization of H2 molecules by 75 keV proton impact. The computed fully differential cross sections for different electron ejection geometries and projectile kinematical conditions are compared with recent measurements made by Hasan et al (2014 J. Phys. B: At. Mol. Opt. Phys. 47 215201). We employ a molecular version of the continuum distorted wave-eikonal initial state model, where all the interactions present in the exit channel are considered on an equal footing. In addition, our approach allows us to incorporate different interference terms and to assess their influence. Overall, the agreement between experiment and theory is better than for the case of more sophisticated schemes for coplanar geometries.
M. F. Ciappina et al., "Single- and Two-Centre Effects in Fully Differential Cross Sections for Single Ionization of H₂ Molecules by 75 KeV Protons," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 48, no. 11, Institute of Physics - IOP Publishing, Apr 2015.
The definitive version is available at https://doi.org/10.1088/0953-4075/48/11/115204
Keywords and Phrases
Distortion (waves); Impact ionization; Ionization; Atomic collision; Continuum-distorted-wave eikonal-initial-state model; Distorted-wave models; Fully differential cross sections; Interference effects; Interference terms; Single ionization; Theoretical calculations; Molecules
International Standard Serial Number (ISSN)
Article - Journal
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01 Apr 2015