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Electron; cross-section; ionization; scattering.

In this paper, triple differential cross-sections for the ionization of metastable 2P-state hydrogen atoms by 250 eV electron energy with exchange effects for various kinematic conditions are calculated. Multiple scattering theory proposed by Das and Seal in {\it Phys. Rev.} A 47, 2978 (1993) is utilized here. The computational results provide significant peak features that show good qualitative agreement with the hydrogenic ground-state experimental data and theoretical results and the present first Born results. In addition, physical origin of the peaks of the cross-section curves is investigated.

SUNIL DHAR¹ NURUN NAHAR¹

1. Department of Mathematics, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh

Published

16 November 2016

Manuscript received

2 December 2014

Manuscript revised

20 January 2016

Accepted

7 March 2016

Early published

6 October 2016