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

doi:10.1088/1674-1056/23/2/023402

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.

Keywords: photodetament elastic interface closed orbit theory metallic sphere surface

Received: 30 May 2013
Revised: 08 July 2013
Accepted manuscript online:

PACS:	34.35.+a	(Interactions of atoms and molecules with surfaces)
	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)

Fund: 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).

Corresponding Authors: Wang De-Hua
E-mail: lduwdh@163.com

About author: 34.35.+a; 32.80.Gc; 32.80.Qk; 42.50.Hz

Cite this article:

Li Shao-Sheng (李绍晟), Wang De-Hua (王德华) Control of the photodetachment of H^- near a metallic sphere surface by an elastic interface 2014 Chin. Phys. B 23 023402

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

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