Eur. Phys. J. D (2015) 69: 174
https://doi.org/10.1140/epjd/e2015-60157-9

Regular Article

Internuclear interaction and distortion effects on fully differential cross section for single ionization of helium by 100 MeV/amu C⁶⁺ impact

School of Physics and Information Engineering, Shanxi Normal University, Linfen, Shanxi 041004, P.R. China

^a e-mail: jiaxf@dns.sxnu.edu.cn

Received: 7 March 2015
Received in final form: 8 June 2015
Published online: 14 July 2015

Abstract

The modified Coulomb-Born approximation model is applied to calculate the fully differential cross section (FDCS) for single ionization of helium by 100 MeV/amu C⁶⁺ impact. We study the influence of the internuclear interaction on the FDCS in the scattering plane and the perpendicular plane. Comparisons are made with absolute experimental data and the 3DW results and we find that our calculations with (without) the internuclear interaction yield excellent agreement with experiments for the small (large) momentum transfer. Accordingly, we discuss the contributions of distortion effects to the FDCS both in the scattering plane and the perpendicular plane. It turns out that the distortion effects become significantly important with increasing momentum transfer.