Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 123403-123403.doi: 10.1088/1674-1056/21/12/123403

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Unnatural parity resonance states in positron-excited hydrogen scattering

马佳, 周雅君, 王远成   

  1. Center for Theoretical Atomic and Molecular Physics, Academy of Fundamental andInterdisciplinary Sciences, Harbin Institute of Technology, Harbin 150081, China
  • 收稿日期:2012-03-30 修回日期:2012-06-18 出版日期:2012-11-01 发布日期:2012-11-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10674055).

Unnatural parity resonance states in positron-excited hydrogen scattering

Ma Jia (马佳), Zhou Ya-Jun (周雅君), Wang Yuan-Cheng (王远成)   

  1. Center for Theoretical Atomic and Molecular Physics, Academy of Fundamental andInterdisciplinary Sciences, Harbin Institute of Technology, Harbin 150081, China
  • Received:2012-03-30 Revised:2012-06-18 Online:2012-11-01 Published:2012-11-01
  • Contact: Zhou Ya-Jun E-mail:yajunzhou2003@yahoo.com.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10674055).

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摘要： The coupled-channels optical method for positron scattering has been applied to investigate resonance states with unnatural parities in positron-excited hydrogen system. The positronium formation channels and continuum channel are included via a complex equivalent local potential. Resonance states with angular momenta L=1 to L=2 and parities (-1)L+1 are calculated. Resonance energies and widths are reported and compared with other theoretical calculations. We found that the opening positronium formation channels play an important role in forming nondipole Feshbach resonances.

关键词: positrons, excited-hydrogen atom, unnatural parity resonances, positronium, coupled-channels optical method

Abstract: The coupled-channels optical method for positron scattering has been applied to investigate resonance states with unnatural parities in positron-excited hydrogen system. The positronium formation channels and continuum channel are included via a complex equivalent local potential. Resonance states with angular momenta L=1 to L=2 and parities (-1)L+1 are calculated. Resonance energies and widths are reported and compared with other theoretical calculations. We found that the opening positronium formation channels play an important role in forming nondipole Feshbach resonances.

Key words: positrons, excited-hydrogen atom, unnatural parity resonances, positronium, coupled-channels optical method

中图分类号:  (Positron scattering)

  • 34.80.Uv