少周期XUV激光中氢分子离子单光子电离理论研究  

Theoretical calculation for single-photon ionization of molecular hydrogen ion in a few-cycle XUV laser field

作　　者：周胜鹏[1,2] 丁大军 ZHOU Sheng-Peng;DING Da-Jun(,Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China;Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学原子与分子物理研究所,长春130012 [2]吉林省应用原子分子光谱重点实验室,长春130012

出　　处：《原子与分子物理学报》2018年第4期634-638,共5页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(11627807;11534004)

摘　　要：通过数值求解二维含时薛定谔方程研究了氢分子离子在圆偏振XUV少周期激光电场中的单光子电离,结果观察到不同核间距的氢分子离子的光电子能谱的能移现象.分析表明,在少周期激光场宽频情况下,分子电离电子的双中心干涉改变了夫兰克-康登因子的单调递减趋势,使不同核间距氢分子离子的光电子能谱出现能量移动.We theoretically study the ionization of hydrogen molecular ion in a few-cycle XUV laser field by solving 2D time-dependent Schrtidinger equation. In our numerical results, we found that there are energy shifts of photoelectron energy spectra of hydrogen molecular ion. By analysis, when the spectral width of the laser pul- ses is broad, we found that the two-center interference changes the monotone decreasing trend of Franck-Condon factors, which cause energy shifts of photoelectron energy spectra of hydrogen molecular ion with different nuclear distances.

关 键 词：激光 少周期 氢分子离子 红移 蓝移 

分 类 号：O561.4[理学—原子与分子物理]