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Chin. Phys. B, 2017, Vol. 26(10): 103202    DOI: 10.1088/1674-1056/26/10/103202
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

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
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.
Keywords:  harmonic potential      oscillating electric field      time-dependent closed orbit theory      photodetachment dynamics  
Received:  15 March 2017      Revised:  22 June 2017      Accepted manuscript online: 
PACS:  32.80.Gc (Photodetachment of atomic negative ions)  
  31.15.xg (Semiclassical methods)  
Fund: 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).
Corresponding Authors:  De-Hua Wang     E-mail:  lduwdh@163.com

Cite this article: 

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 2017 Chin. Phys. B 26 103202

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