中国物理B ›› 2014, Vol. 23 ›› Issue (10): 103304-103304.doi: 10.1088/1674-1056/23/10/103304

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Interferences in photo-detached electron spectra froma non-collinear tri-atomic anion

A. Afaqa, K. Farooqb, M. A. Khanb, 衣学喜b   

  1. a Center of Excellence in Solid State Physics, University of the Punjab, Lahore-54590, Pakistan;
    b School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2014-02-24 修回日期:2014-05-24 出版日期:2014-10-15 发布日期:2014-10-15

Interferences in photo-detached electron spectra froma non-collinear tri-atomic anion

A. Afaqa, K. Farooqb, M. A. Khanb, Yi Xue-Xi (衣学喜)b   

  1. a Center of Excellence in Solid State Physics, University of the Punjab, Lahore-54590, Pakistan;
    b School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
  • Received:2014-02-24 Revised:2014-05-24 Online:2014-10-15 Published:2014-10-15
  • Contact: A. Afaq,K. Farooq E-mail:aafaq.cssp@pu.edu.pk;farooqdardyal@gmail.com
  • About author:33.80.-b; 32.80.Gc; 32.80.Qk

摘要: The electron flux oscillations in photo-detachment of a non-collinear tri-atomic anion have been studied by taking each atom of the system as a coherent source of detached-electron wave. These electron waves traversing along three different trajectories result in a quantum interference. An analytical expression of detached-electron flux is evaluated for various detached-electron energies and for different geometrical shapes of the system. The results show that the electron flux distributions exhibit molecular shape-induced oscillatory structures. These oscillations are explained using the semi-classical closed-orbit theory; the outgoing electron waves produced from one center are propagated in the vicinity of the sources at other centers. It is also observed that in a particular case our non-collinear tri-atomic system reduces to the collinear tri-atomic system recently published.

关键词: electron flux, collinear tri-atomic system, quantum interference

Abstract: The electron flux oscillations in photo-detachment of a non-collinear tri-atomic anion have been studied by taking each atom of the system as a coherent source of detached-electron wave. These electron waves traversing along three different trajectories result in a quantum interference. An analytical expression of detached-electron flux is evaluated for various detached-electron energies and for different geometrical shapes of the system. The results show that the electron flux distributions exhibit molecular shape-induced oscillatory structures. These oscillations are explained using the semi-classical closed-orbit theory; the outgoing electron waves produced from one center are propagated in the vicinity of the sources at other centers. It is also observed that in a particular case our non-collinear tri-atomic system reduces to the collinear tri-atomic system recently published.

Key words: electron flux, collinear tri-atomic system, quantum interference

中图分类号:  (Photon interactions with molecules)

  • 33.80.-b
32.80.Gc (Photodetachment of atomic negative ions) 32.80.Qk (Coherent control of atomic interactions with photons)