Single- and Two-Centre Effects in Fully Differential Cross Sections for Single Ionization of H₂ Molecules by 75 KeV Protons

Abstract

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.

Department(s)

Physics

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)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Apr 2015

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