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Plasma-screening effects on positronium formation

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Ma Jia 1 *   Wang Yuancheng 2 *   Zhou Yajun 3   Wang Heng 1  
文摘 Plasma-screening effects on positronium (Ps) formation for positron–hydrogen collisions in a Debye plasma environment is further investigated using the screening approximation model with the inclusion of the modified structure of Ps. More accurate Ps formation cross sections (n = 1, 2) are obtained for various Debye lengths from the Ps formation thresholds to 50 eV. The influence of considering modified bound-state wave functions and eigenenergies for the Ps is found to result in the reduction of the Ps formation cross sections at low energies, whereas it cannot counteract the enhancement of the Ps formation by the Debye screening.
来源 Chinese Physics. B ,2018,27(1):013401-1-013401-5 【核心库】
DOI 10.1088/1674-1056/27/1/013401
关键词 plasma-screening effect ; positron ; scattering ; positronium formation
地址

1. College of Science, Shenyang Aerospace University, Shenyang, 110136  

2. College of Physics Science and Technology, Shenyang Normal University, Shenyang, 110034  

3. Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012

语种 英文
文献类型 研究性论文
ISSN 1674-1056
学科 物理学
基金 国家自然科学基金 ;  the Doctoral Program Foundation of Shenyang Aerospace University, China
文献收藏号 CSCD:6194474

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引证文献 1

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