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

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

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...

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Bibliographic Details
Main Authors: Jiang, Zi Shi, Gao, Ya Chen, Kar, Sabyasachi, Ratnavelu, Kurunathan
Format: Article
Published: IOP Publishing 2018
Subjects:
Q Science (General)
QA Mathematics
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/21737/
https://doi.org/10.1088/1674-1056/27/12/123402
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Institution: Universiti Malaya
Description
Summary: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.

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