Positron Differential Studies: Comparison to Photoionization
Abstract
In this paper we study the transition from adiabatic to sudden double ionization of valence electrons of atoms by positron impact. Double ionization by a charged particle is usually represented in terms of the shake-off (SO), twostep 1 (TS-1), and two-step 2 (TS-2) mechanisms. The relative contribution of those mechanisms is determined for double ionization of neon. For argon, the SO mechanism is shown to fit the electron impact data but not the positron data. Different post-collision interactions for positron and electron impact or the transition from the adiabatic (TS-1) to the sudden regime (SO) which could imply different interferences between single-and double-interaction mechanisms are possible interpretations for the observed differences. © 2013 AIP Publishing LLC.
Recommended Citation
A. C. Santos et al., "Positron Differential Studies: Comparison to Photoionization," AIP Conference Proceedings, vol. 1525, pp. 441 - 443, American Institute of Physics, May 2013.
The definitive version is available at https://doi.org/10.1063/1.4802366
Department(s)
Physics
Keywords and Phrases
Multiple ionization; Positron impact
International Standard Book Number (ISBN)
978-073541148-7
International Standard Serial Number (ISSN)
1551-7616; 0094-243X
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Physics, All rights reserved.
Publication Date
20 May 2013
