Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/9528
Elastic scattering of fast electrons and positrons by atoms
Journal Title
Authors
Director/Tutor
Additional contribution
Journal ISSN
Volume Title
Abstract
Elastic scattering of relativistic electrons and positrons by atoms is considered in the framework of the static field approximation. The scattering field is expressed as a sum of Yukawa terms to allow the use of various approximations. Accurate phase shifts have been computed by combining Bühring¿s power-series method with the WKB and Born approximations. This combined procedure allows the evaluation of differential cross sections for kinetic energies up to several tens of MeV. Numerical results are used to analyze the validity of several approximate methods, namely the first- and second-order Born approximations and the screened Mott formula, which are frequently adopted as the basis of multiple scattering theories and Monte Carlo simulations of electron and positron transport.
Related resource
Subject
Subject (English)
Citation
Citation
SALVAT GAVALDÀ, Francesc. Elastic scattering of fast electrons and positrons by atoms. Physical Review A. 1991. Vol. 43, num. 1, pags. 578-581. ISSN 1050-2947. [consulted: 18 of October of 2026]. Available at: https://hdl.handle.net/2445/9528