Abstract
A three-body classical trajectory Monte-Carlo calculation is used to evaluate the differential cross sections for the ejected electron, as well as the projectile scattering for 50, 100 and 150 eV e++Ar0 electron removal collisions. In the ionized eleciron spectra both the electron capture to the continuum (ecc) and binary peak structures are observed. The theoretical ecc peak is diffuse and shifted to lower energies than expected from simple arguments. The calculated double differential cross sections for electron ejection have been compared to experiment, When the experimental apparatus function of Moxom et al is used to convolute the theoretical spectra, good agreement with their data is found that confirms a sharp ecc structure is not present in this system. Moreover, comparisons made at non-zero angles show substantial agreement between theory and experiment. The scattered positions agree well with measurements made at 3° by Kövér et al, but differ a1 larger angles. In addition, the differential cross section for positronium formation is presented; no evidence of an observable Thomas peak is present. © 1994 IOP Publishing Ltd.
Recommended Citation
R. A. Sparrow and R. E. Olson, "Projectile and Electron Spectra Resulting from Positron-Argon Collisions," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 27, no. 12, pp. 2647 - 2655, IOP Publishing, Jun 1994.
The definitive version is available at https://doi.org/10.1088/0953-4075/27/12/022
Department(s)
Physics
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
28 Jun 1994
