Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session M06: Ion-Neutral and Electron-Neutral Collisions
2:00 PM–3:36 PM,
Wednesday, June 2, 2021
Co-Sponsoring
Unit:
GEC
Chair: Mark Zammit, LANL
Abstract: M06.00003 : Differential cross sections for electron-impact ionization of neonĀ *
2:24 PM–2:36 PM
Live
Presenter:
James P Colgan
(Los Alamos Natl Lab)
Authors:
James P Colgan
(Los Alamos Natl Lab)
Mark C Zammit
(Los Alamos National Laboratory)
Nathan Garland
(Los Alamos National Laboratory)
Chris J Fontes
(Los Alamos National Laboratory)
Xianzhu Tang
(Los Alamos Natl Lab)
Mitch Pindzola
(Auburn University)
Our angular distribution calculations extend our previous work that supports modeling of runaway electrons in plasma kinetics modeling. As in lighter targets, we find that the largest cross sections occur when the scattered electron retains most of the available energy after ionization and is almost undeflected by the target. The angular distribution of the ejected electron, however, is strongly peaked at momentum transfer directions away from the scattered electron, in contrast with the isotropic distribution commonly assumed in plasma simulations of electron kinetics. We discuss our calculations and explore the consequences for the inclusion of these angular distributions in such simulations.
*This work was supported by the US Department of Energy through the Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218NCA000001).
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