Dynamic effective charge in the target continuum within the CDW-EIS model for ionisation in ion-atom collisions: angular dependence

M. F. ROJAS; M. A. QUINTO; R. D. RIVAROLA

The European Physical Journal D

EDP Sciences/Spriner Verlag part of Springer Nature

Lugar: Berna; Año: 2021 vol. 75 p. 1 - 7

2218-2004

In the present work, the consideration of a dynamic charge to describe the non-Coulom potential of the residual target for ionisation in bare ion-multielectron atom collisions is studied. This is based on the weel-known Belkic´s prescription. It is shown that using an emission-angle-dependent charge in the final residual target continuum state improves the doubly differential cross sections for backward emission angles. It appears as an excellent choice to avois large-time consuming calculations, associated with the use of numerical continuum functions. Improving the physical description of the ionisation reaction whilst keeping calculations times as low as possible is necessary for multiple applications that require large cross sections databases.