https://doi.org/10.1140/epjd/e2017-70809-3
Regular Article
Influence of residual ion polarization on the coplanar symmetric (e, 2e) cross sections for calcium and argon*
1 Data Center for High Energy Density Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, P.R. China
2 College of Science, National University of Defense Technology, Changsha, Hunan 410073, P.R. China
3 Department of Physics, Harbin Institute of Technology, Harbin 150001, P.R. China
4 Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding 071002, P.R. China
a
e-mail: chenzb008@qq.com
b
e-mail: wangkai10@fudan.edu.cn
Received: 25 December 2016
Received in final form: 17 February 2017
Published online: 4 April 2017
Detailed calculations using a modified distorted wave Born approximation (DWBA) are carried out for the triple differential cross section (TDCS) in the coplanar symmetric single ionization of calcium and argon atoms. The effects of residual ion polarization on the TDCS are investigated systematically. Our results show that the residual ion polarization, arising from the interaction between the target ion and the two outgoing electrons in the final state, may lead to a considerable change in the TDCS with a more pronounced effect in the large scattering angle region at intermediate energies. The present attempt significantly improves the agreement between theoretical and experimental results.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2017
