Semiclassical Calculation of Recurrence Spectra of Li Rydberg Atom in Crossed Electric and Magnetic Field  

作　　者：WANGDe-Hua DINGShi-Liang 

机构地区：[1]SchoolofPhysicsandMicroelectronics,ShandongUniversity,Jinan250100,China [2]DepartmentofMathematicsandPhysics,ShandongInstituteofArchitectureandEngineering,Jinan250014,China

出　　处：《Communications in Theoretical Physics》2003年第6X期702-706,共5页理论物理通讯（英文版）

基　　金：国家自然科学基金，山东省自然科学基金，教育部博士后科学基金

摘　　要：Closed-orbit theory is a semiclassical technique for explaining the spectra of Rydberg atoms in external fields. Using the closed-orbit theory and classical perturbation theory, we calculate the scaled recurrence spectra of Lithium atom in magnetic field plus a weak perpendicular electric field. The results show when the crossed electric field is added, the recurrence spectra are weakened greatly. As the scaled electric field f increases, the peaks of the recurrence spectra lose strength. Some recurrences are very sensitive and fall off rapidly as f increases; others persist till much higher f . As the electric field is stronger, some of the peaks revive. This phenomenon, caused by the interference among the electron waves that return to the nucleus, can be computed from the azimuthal dependence of the classical closed orbits.

关 键 词：半经典计算 循环光谱 封闭轨道理论 经典扰动理论 磁场 电场 RYDBERG原子 

分 类 号：O562.1[理学—原子与分子物理]