SUNIL DHAR
Articles written in Pramana – Journal of Physics
Volume 87 Issue 5 November 2016 Article ID 0069 Regular
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.
Volume 91 Issue 6 December 2018 Article ID 0078 Research Article
Ionisation of metastable 3P-state hydrogen atom by electron with exchange effects
SHAHRINA AKTER SUNIL DHAR NURUN NAHAR LIPON CHANDRA DAS
In the present work, the triple-differential cross-sections (TDCSs) for the ionisation of metastable 3P-state hydrogen atoms at an incident electron energy of 250 eV with exchange effects are computed in the asymmetric coplanar geometry for various kinematic conditions. The final-state wave function of Das and Seal (
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