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Resonances for positron-helium and positron-lithium systems in kappa-distribution plasma |
Zi-Shi Jiang(姜子实)1, Ya-Chen Gao(高亚臣)1, Sabyasachi Kar2, Kurunathan Ratnavelu3 |
1 Key Laboratory of Electronics Engineering, College of Heilongjiang Province, Heilongjiang University, and College of Physical Science and Technology, Heilongjiang University, Harbin 150080, China;
2 Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
3 Department of Mathematics, University of Malaya, Kuala Lampur, Malaysia |
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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.
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Received: 22 July 2018
Revised: 18 September 2018
Accepted manuscript online:
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PACS:
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34.80.Uv
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(Positron scattering)
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52.20.-j
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(Elementary processes in plasmas)
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95.30.Dr
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(Atomic processes and interactions)
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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
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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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