Multiple-electron losses of highly charged ions colliding with neutral atoms

TL;DR

This paper presents theoretical calculations of multiple-electron loss cross sections for highly charged uranium ions colliding with noble gases, showing good agreement with experimental data and highlighting the significant contribution of multiple-electron processes.

Contribution

The study introduces detailed computational methods for calculating multiple-electron loss cross sections using the DEPOSIT code for highly charged ions.

Findings

Calculated cross sections agree well with experimental data.

Multiple-electron loss contributes about 65% to total electron-loss cross sections.

High projectile charge results in significant multiple-electron loss contributions.

Abstract

We present calculations of the total and m-fold electron-loss cross sections using the DEPOSIT code for highly charged U(q+) ions (q=10,31,33) colliding with Ne and Ar targets at projectile energies E=1.4 and 3.5 MeV/u. Typical examples of the deposited energy T(b) and m-fold ionization probabilities Pm(b) used for the cross-section calculations as a function of the impact parameter b are given. Calculated m-fold electron-loss cross sections are in a good agreement with available experimental data. Although the projectile charge is rather high, a contribution of multiple-electron loss cross sections to the total electron-loss cross sections is high: about 65% for the cases mentioned.