Interferences in Photodetachment of a Negative Molecular Ion

作     者：Ahmad Afaq DU Meng-Li 

作者机构：Institute of Theoretical Physics the Chinese Academy of Sciences Beijing 100080 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2006年第46卷第1X期

页      面：119-122页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 070201[理学-理论物理] 0704[理学-天文学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：The project supported by National Natural Science Foundation of China under Grant No. 90403028 

主　　题：photodetachment quantum interference 

摘      要：The photodetachment of a negative molecular ion is studied theoretically using a two-center model. The detached electron wave function is obtained as a superposition of two coherent waves originating from each center. The photo-detached electron flux is evaluated on a screen placed at a large distance from the negative molecular ion. The electron flux on the screen displays strong interferences, the peak positions are related to the distance between the two centers in the negative molecular ion. We a/so obtained a simple analytical formula for the total photodetachment cross section. It approaches one and two times of the cross section for the one-center system in the high and lowphoton energy limits respectively.