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

doi: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.

Keywords: positron-atom scattering kappa-distribution plasmas model potential approach variational method

Received: 22 July 2018
Revised: 18 September 2018
Accepted manuscript online:

PACS:	34.80.Uv	(Positron scattering)
	52.20.-j	(Elementary processes in plasmas)
	95.30.Dr	(Atomic processes and interactions)

Fund:

Project supported by the University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province, China (Grant No. UNPYSCT-2015019), the Fundamental Research Funds of Heilongjiang University, Heilongjiang Province, China (Grant No. HDJCCX-201625), the Natural Science Foundation for Distinguished Young Scholars in Heilongjiang University, China (Grant No. JCL201503), and the Natural Science Foundation of Heilongjiang Province, China (Grant No. A2017008).

Corresponding Authors: Ya-Chen Gao
E-mail: gaoyachen@hlju.edu.cn

Cite this article:

Zi-Shi Jiang(姜子实), Ya-Chen Gao(高亚臣), Sabyasachi Kar, Kurunathan Ratnavelu Resonances for positron-helium and positron-lithium systems in kappa-distribution plasma 2018 Chin. Phys. B 27 123402

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

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