https://doi.org/10.1140/epjd/e2014-40711-9
Regular Article
K-shell ionization by positrons in the binary-encounter approximation*
1
Institute of Nuclear Research of the Hungarian Academy of Sciences
(ATOMKI), 4026
Debrecen,
Hungary
2
Department of Physics, Tokyo University of Science,
1-3 Kagurazaka, Shinjuku-Ku,
162-8601
Tokyo,
Japan
a
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received: 13 November 2013
Received in final form: 28 January 2014
Published online: 21 March 2014
Abstract
The K-shell ionization cross sections by positron impact have been calculated for Cu in the binary-encounter approximation by the use of velocity distribution of the target electron from the nonrelativistic and relativistic hydrogenic models. The results are compared with the values obtained with velocity distribution in the free-fall model. The effect of choice of atomic models on the ionization cross sections is discussed. We found that the present results are in agreement with the experimental data and other theoretical values.
Contribution to the Topical Issue “Electron and Positron Induced Processes”, edited by Michael Brunger, Radu Campeanu, Masamitsu Hoshino, Oddur Ingólfsson, Paulo Limão-Vieira, Nigel Mason, Yasuyuki Nagashima and Hajime Tanuma.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014
