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

作     者：Zi-Shi Jiang Ya-Chen Gao 姜子实;高亚臣;Sabyasachi Kar;Kurunathan Ratnavelu

作者机构：Key Laboratory of Electronics EngineeringCollege of Heilongjiang ProvinceHeilongjiang Universityand College of Physical Science and TechnologyHeilongjiang UniversityHarbin 150080China Department of PhysicsHarbin Institute of TechnologyHarbin 150001China Department of MathematicsUniversity of MalayaKuala LampurMalaysia 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2018年第27卷第12期

页      面：244-249页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：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) the Natural Science Foundation of Heilongjiang Province,China(Grant No.A2017008) 

主　　题：positron–atom scattering kappa-distribution plasmas model potential approach variational method 

摘      要：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.