Resonances for positron–helium and positron–lithium systems in kappa-distribution plasma
Document Type
Article
Publication Date
1-1-2018
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
kappa-distribution plasmas, model potential approach, positron-atom scattering, variational method
Publication Title
Chinese Physics B
Divisions
MathematicalSciences
Funders
University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province, China (Grant No. UNPYSCT-2015019),Fundamental Research Funds of Heilongjiang University, Heilongjiang Province, China (Grant No. HDJCCX-201625),Natural Science Foundation for Distinguished Young Scholars in Heilongjiang University, China (Grant No. JCL201503),Natural Science Foundation of Heilongjiang Province, China (Grant No. A2017008)
Volume
27
Issue
12
Publisher
IOP Publishing