中国物理B ›› 2014, Vol. 23 ›› Issue (2): 23402-023402.doi: 10.1088/1674-1056/23/2/023402

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Control of the photodetachment of H- near a metallic sphere surface by an elastic interface

李绍晟, 王德华   

  1. School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China
  • 收稿日期:2013-05-30 修回日期:2013-07-08 出版日期:2013-12-12 发布日期:2013-12-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11074104 and 11374133) and the Shandong Provincial Higher Educational Science and Technology Program, China (Grant No. J13LJ04).

Control of the photodetachment of H- near a metallic sphere surface by an elastic interface

Li Shao-Sheng (李绍晟), Wang De-Hua (王德华)   

  1. School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China
  • Received:2013-05-30 Revised:2013-07-08 Online:2013-12-12 Published:2013-12-12
  • Contact: Wang De-Hua E-mail:lduwdh@163.com
  • About author:34.35.+a; 32.80.Gc; 32.80.Qk; 42.50.Hz
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11074104 and 11374133) and the Shandong Provincial Higher Educational Science and Technology Program, China (Grant No. J13LJ04).

摘要: According to the closed-orbit theory, we study the influence of elastic interface on the photodetachment of H- near a metallic sphere surface. First, we give a clear physical description of the detached electron movement between the elastic interface and the metallic sphere surface. Then we put forward an analytical formula for calculating the photodetachment cross section of this system. Our study suggests that the photodetachment cross section of H- is changed with the distance between the elastic interface and H-. Compared with the photodetachment cross section of H- near a metallic sphere surface without the elastic interface, the cross section of our system oscillates and its oscillation is strengthened with the decrease of the distance from the elastic interface to H-. In additon, our calcuation results suggest that the influence of the elastic interface becomes much more significant when it is located in the lower half space rather than in the upper half space. Therefore, we can control the photodetachment of H- near a metallic sphere surface by changing the position of the elastic interface. We hope that our work is conducive to the understanding of the photodetachment process of negative ions near interfaces, cavities and ion traps.

关键词: photodetament, elastic interface, closed orbit theory, metallic sphere surface

Abstract: According to the closed-orbit theory, we study the influence of elastic interface on the photodetachment of H- near a metallic sphere surface. First, we give a clear physical description of the detached electron movement between the elastic interface and the metallic sphere surface. Then we put forward an analytical formula for calculating the photodetachment cross section of this system. Our study suggests that the photodetachment cross section of H- is changed with the distance between the elastic interface and H-. Compared with the photodetachment cross section of H- near a metallic sphere surface without the elastic interface, the cross section of our system oscillates and its oscillation is strengthened with the decrease of the distance from the elastic interface to H-. In additon, our calcuation results suggest that the influence of the elastic interface becomes much more significant when it is located in the lower half space rather than in the upper half space. Therefore, we can control the photodetachment of H- near a metallic sphere surface by changing the position of the elastic interface. We hope that our work is conducive to the understanding of the photodetachment process of negative ions near interfaces, cavities and ion traps.

Key words: photodetament, elastic interface, closed orbit theory, metallic sphere surface

中图分类号:  (Interactions of atoms and molecules with surfaces)

  • 34.35.+a
32.80.Gc (Photodetachment of atomic negative ions) 32.80.Qk (Coherent control of atomic interactions with photons) 42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)