| Resonance phenomena and threshold features in positron—helium scattering |
| |
| 引用本文： | 于荣梅,程勇军,王旸,周雅君.Resonance phenomena and threshold features in positron—helium scattering[J].中国物理 B,2012,21(5):53402-053402. |
| |
| 作者姓名： | 于荣梅 程勇军 王旸 周雅君 |
| |
| 作者单位： | The Academy of Fundamental and Interdisciplinary Sciences,Harbin Institute of Technology |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant No. 10674055） |
| |
| 摘 要： | Investigations of resonances and threshold behaviors in positron-helium scattering have been made using the momentum-space coupled-channels optical method.The positronium formation channels are considered via an equivalent-local complex potential.The s-wave resonances and the Wigner cusp feature at the positronium(n = 1) formation threshold are compared with the previous reports.The p-and the d-wave resonances and a Wigner cusp feature at the positronium(n = 2) formation threshold are reported for the first time.
|
| 关 键 词： | positron helium resonance |
| 收稿时间： | 2012-01-09 |
Resonance phenomena and threshold features in positron-helium scattering |
| |
| Yu Rong-Mei,Cheng Yong-Jun,Wang Yang,Zhou Ya-Jun.Resonance phenomena and threshold features in positron-helium scattering[J].Chinese Physics B,2012,21(5):53402-053402. |
| |
| Authors: | Yu Rong-Mei Cheng Yong-Jun Wang Yang Zhou Ya-Jun |
| |
| Institution: | The Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150081, China |
| |
| Abstract: | Investigations of resonances and threshold behaviors in positron--helium scattering have been made using the momentum-space coupled-channels optical method. The positronium formation channels are considered via an equivalent-local complex potential. The s-wave resonances and the Wigner cusp feature at the positronium (n=1) formation threshold are compared with the previous reports. The p-and the d-wave resonances and a Wigner cusp feature at the positronium (n=2) formation threshold are reported for the first time. |
| |
| Keywords: | positron helium resonance |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
