Photodetachment dynamics of H- ion in a harmonic potential plus a time-dependent oscillating electric field

doi:10.1088/1674-1056/26/10/103202

中国物理B ›› 2017, Vol. 26 ›› Issue (10): 103202-103202.doi: 10.1088/1674-1056/26/10/103202

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Photodetachment dynamics of H^- ion in a harmonic potential plus a time-dependent oscillating electric field

De-Hua Wang(王德华), Chuan-Juan Wang(王传娟)

1. School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China;
2. Linqu Vocational Education Center School, Linqu 262605, China

收稿日期:2017-03-15 修回日期:2017-06-22 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: De-Hua Wang E-mail:lduwdh@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11374133) and the Taishan Scholars Project of Shandong Province, China (Grant No. ts2015110055).

Photodetachment dynamics of H^- ion in a harmonic potential plus a time-dependent oscillating electric field

De-Hua Wang(王德华)¹, Chuan-Juan Wang(王传娟)²

1. School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China;
2. Linqu Vocational Education Center School, Linqu 262605, China

Received:2017-03-15 Revised:2017-06-22 Online:2017-10-05 Published:2017-10-05
Contact: De-Hua Wang E-mail:lduwdh@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11374133) and the Taishan Scholars Project of Shandong Province, China (Grant No. ts2015110055).

摘要/Abstract

摘要： The photodetachment dynamics of H^- ion in a harmonic potential plus an oscillating electric field is studied using the time-dependent closed orbit theory. An analytical formula for calculating the photodetachment cross section of this system is put forward. It is found that the photodetachment cross section of this system is nearly unaffected for the weak oscillating electric field strength, but oscillates complicatedly when the oscillating electric field strength turns strong. In addition, the frequency of the harmonic potential and the oscillating electric field (the frequency of the harmonic potential and the frequency of the oscillating electric field are the same in the paper, unless otherwise stated.) can also affect the photodetachment dynamics of this system. With the increase of the frequency in the harmonic potential and the oscillating electric field, the number of the closed orbits for the detached electrons increased, which makes the oscillatory structure in the photodetachment cross section much more complex. Our study presents an intuitive understanding of the photodetachment dynamics driven by a harmonic potential plus an oscillating electric field from a space and time dependent viewpoint. This study is very useful in guiding the future experimental research for the photodetachment dynamics in the electric field both changing with space and time.

关键词: harmonic potential, oscillating electric field, time-dependent closed orbit theory, photodetachment dynamics

Abstract: The photodetachment dynamics of H^- ion in a harmonic potential plus an oscillating electric field is studied using the time-dependent closed orbit theory. An analytical formula for calculating the photodetachment cross section of this system is put forward. It is found that the photodetachment cross section of this system is nearly unaffected for the weak oscillating electric field strength, but oscillates complicatedly when the oscillating electric field strength turns strong. In addition, the frequency of the harmonic potential and the oscillating electric field (the frequency of the harmonic potential and the frequency of the oscillating electric field are the same in the paper, unless otherwise stated.) can also affect the photodetachment dynamics of this system. With the increase of the frequency in the harmonic potential and the oscillating electric field, the number of the closed orbits for the detached electrons increased, which makes the oscillatory structure in the photodetachment cross section much more complex. Our study presents an intuitive understanding of the photodetachment dynamics driven by a harmonic potential plus an oscillating electric field from a space and time dependent viewpoint. This study is very useful in guiding the future experimental research for the photodetachment dynamics in the electric field both changing with space and time.

Key words: harmonic potential, oscillating electric field, time-dependent closed orbit theory, photodetachment dynamics

中图分类号: (Photodetachment of atomic negative ions)

32.80.Gc

31.15.xg (Semiclassical methods)

王德华, 王传娟. Photodetachment dynamics of H^- ion in a harmonic potential plus a time-dependent oscillating electric field[J]. 中国物理B, 2017, 26(10): 103202-103202.

De-Hua Wang(王德华), Chuan-Juan Wang(王传娟). Photodetachment dynamics of H^- ion in a harmonic potential plus a time-dependent oscillating electric field[J]. Chin. Phys. B, 2017, 26(10): 103202-103202.

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Photodetachment dynamics of H^- ion in a harmonic potential plus a time-dependent oscillating electric field

Photodetachment dynamics of H^- ion in a harmonic potential plus a time-dependent oscillating electric field

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