Singly differential cross sections with exchange for Ps-fragmentation

TL;DR

This paper calculates the singly differential cross sections for positronium ionization in Ps-H and Ps-He scattering, providing detailed insights into the energy distribution of break-up particles and comparing results with existing data.

Contribution

It introduces a detailed evaluation of SDCS for Ps-ionization, offering more precise tests of theoretical models than total cross sections.

Findings

SDCS results agree with experimental data

Provides detailed energy distribution profiles

Enhances understanding of Ps-ionization mechanisms

Abstract

Ps ionization in Ps-atom scattering is of fundamental importance. The singly differential cross sections (SDCS) provides more accurate information to test a theory than integrated or total ionization cross section since the averaging over one parameter is not required. We evaluate the SDCS for Ps-ionization with respect to the longitudinal energy distribution of the break-up positron and electron in Ps-H and Ps-He scattering and compare them with the recently available experimental and theoretical data.