Resonances for positron–helium and positron–lithium systems in kappa-distribution plasma

Jiang, Zi Shi and Gao, Ya Chen and Kar, Sabyasachi and Ratnavelu, Kurunathan (2018) Resonances for positron–helium and positron–lithium systems in kappa-distribution plasma. Chinese Physics B, 27 (12). p. 123402. ISSN 1674-1056

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Official URL: https://doi.org/10.1088/1674-1056/27/12/123402

Abstract

S-wave resonances of positron-helium and positron-lithium systems in kappa-distribution plasmas are investigated using Hylleraas-type wave functions in the framework of the stabilization method. A model potential approach is used to represent the interactions between the outer electron, the positron and the core. The resonance parameters (position and width) of positron-helium and positron-lithium systems below the Ps(2s) threshold are reported as a function of screening parameter and spectral index of plasma.

Item Type: Article
Uncontrolled Keywords: kappa-distribution plasmas; model potential approach; positron-atom scattering; variational method
Subjects: Q Science > Q Science (General)
Q Science > QA Mathematics
Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Institute of Mathematical Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 02 Aug 2019 01:07
Last Modified: 02 Aug 2019 01:07
URI: http://eprints.um.edu.my/id/eprint/21737

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