Fully differential cross-sections for single ionization of helium by Au^Q+ impact

Center for Molecules Research, School of Physics and Information Engineering, Shanxi Normal University Linfen 041004, PRC

^(a) jiaxf@dns.sxnu.edu.cn

Received: 8 May 2018
Accepted: 19 July 2018

Abstract

We present fully differential cross-sections (FDCS) within the four-body formalism using the three-body Coulomb wave (4B-3C) for the single ionization of He by 3.6 Mev/amu Au^Q+ ions. The purpose of this work is to investigate the validity of the 4B-3C model for more highly charged ions. By comparing our calculations with experimental data and the three-distorted-wave eikonal-initial-state (3DW-EIS) approximation, we find the 4B-3C predict unique forward peak structures in the FDCS and broadly reproduce the experimental data over the entire angular range in a satisfactory manner for Au²⁴⁺. Clear discrepancies are found between both theories and with experiment for Au⁵³⁺.