Coupled-channels optical calculation of positron-hydrogen resonances

An application of the coupled-channels optical method is given for the energy-dependent phenomena of positron- hydrogen resonances below the n = 2 excitation threshold. The equivalent local optical potential is used to account for the target polarization and positronium formation. The calculation in...

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Bibliographic Details
Published in:Chinese physics B 2012, Vol.21 (1), p.177-182, Article 013404
Main Author: 于荣梅 周雅君 焦利光 程勇军
Format: Article
Language:English
Subjects:
Channels
Cross sections
Equivalence
Formations
Joining
Mathematical analysis
Polarization
Positronium
Thresholds
光学势
光学方法
光学计算
共振能量
正电子
氢
电子偶素
耦合通道
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Summary:An application of the coupled-channels optical method is given for the energy-dependent phenomena of positron- hydrogen resonances below the n = 2 excitation threshold. The equivalent local optical potential is used to account for the target polarization and positronium formation. The calculation includes 9 explicitly physical coupled channels. The lowest S-wave resonance energy position and new resonances are found. Angular dependence of the cross section in the resonance region are investigated.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/1/013404