Abstract
We present energy and angular differential cross sections for single ionization in collisions between electrons and positrons with argon atoms at 250 eV. We treat the collision classically using the three-body approximation where the target atoms are described within the single active electron approximation using a Garvey model potential and only the outermost electron is involved in the collision dynamics. Our present classical trajectory Monte Carlo model is shown to describe the ionization cross sections reasonably well and agree with existing experimental data. We show that the energy distributions, both for electron and positron impact, have the same shape and structure. In contrast, the angular distributions for electron and positron impact behave completely different which it maybe be attributed to the projectile-target core interaction. We present also the ionization probabilities as a function of impact parameter. We found that for the case of positron impact the distribution is symmetric, while for the case of electron impact the distribution is asymmetric.
Recommended Citation
K. Tőkési and R. D. DuBois, "Energy And Angular Distributions In 250 EV Electron And Positron Collisions With Argon Atom," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 57, no. 3, article no. 035202, IOP Publishing, Feb 2024.
The definitive version is available at https://doi.org/10.1088/1361-6455/ad2180
Department(s)
Physics
Publication Status
Open Access
Keywords and Phrases
classical trajectory Monte Carlo model; electron impact; ionization
International Standard Serial Number (ISSN)
1361-6455; 0953-4075
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 IOP Publishing, All rights reserved.
Publication Date
14 Feb 2024
