Electron (positron) impact excitation (2p state) of lithium at intermediate energies

M.Z.M. Kamali; J.H. Chin; S.Y. Ng; Kuru Ratnavelu

doi:10.1140/epjd/e2014-40716-4

EPJ

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2022 Impact factor 1.8

Atomic, Molecular, Optical and Plasma Physics

Topical issue: Electron and Positron Induced Processes. Guest editors: Michael Brunger, Radu Campeanu, Masamitsu Hoshino, Oddur Ingólfsson, Paulo Limão-Vieira, Nigel Mason, Yasuyuki Nagashima and Hajime Tanuma

Eur. Phys. J. D (2014) 68: 50
https://doi.org/10.1140/epjd/e2014-40716-4

Regular Article

Electron (positron) impact excitation (2p state) of lithium at intermediate energies^*

M.Z.M. Kamali¹^a, J.H. Chin², S.Y. Ng³ and Kuru Ratnavelu²

¹ Centre for Foundation Studies in Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
² Institute of Mathematical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
³ Department of Physics, Faculty of Science, National University of Singapore, Singapore

^a e-mail: mzmk2005@gmail.com

Received: 14 November 2013
Received in final form: 3 January 2014
Published online: 18 March 2014

Abstract

In this work, studies have been carried out to investigate theoretically the electron (positron)-impact-induced 2s → 2p lithium (Li) transition at 20 and 60 eV using the coupled-channel optical method (CCOM). The inelastic differential cross sections (DCS) together with the reduced Stokes parameters (, , ) and other parameters such as the alignment (γ, ), orientation (L_⊥) and coherence parameters (P⁺) are reported in the present calculations. Comparison is made with other available theoretical and experimental measurements.

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