New expression for the K-shell ionization

TL;DR

This paper introduces a new relativistic model for calculating K-shell ionization cross sections by electron impact, which aligns well with experimental data across a wide energy range.

Contribution

The paper presents a novel relativistic extension of the binary encounter Bethe model for K-shell ionization cross sections, valid from threshold to relativistic energies.

Findings

Good agreement with experimental data for selenium atom

Valid across a wide energy range from threshold to relativistic energies

Provides a reliable tool for ionization cross section calculations

Abstract

A new expression for the total K-shell ionization cross section by electron impact based on the relativistic extension of the binary encounter Bethe (RBEB) model, valid from ionization threshold up to relativistic energies, is proposed. The new MRBEB expression is used to calculate the K-shell ionization cross sections by electron impact for the selenium atom. Comparison with all, to our knowledge, available experimental data shows good agreement.