Ba Rydberg原子M=0电场常数标度能谱  

Scaled-energy spectroscopy of barium M0 Rydberg atoms in an electric field

作　　者：倪霓[1] 曹俊文[1] 王川[1] 詹明生[1] 

机构地区：[1]中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室,武汉430071

出　　处：《物理学报》2004年第5期1335-1339,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 0 740 72 )资助的课题~~

摘　　要：选择激光偏振方向 ,同步改变激发激光的波长 (即原子的激发能量E)和外加电场强度F ,使标度能ε =E F保持为常数 ,得到了原子束中BaRydberg原子在标度能ε =- 3 0 0时M =0激发的常数标度能谱 .由实验标度能谱的Fourier变换得到的回归谱与氢的均匀化近似后的闭合轨道理论计算相比较 ,发现实验回归谱的峰值位置与理论计算符合较好 ,而峰值强度则与理论相差较大 ,分析认为是由于受到核散射和双电子微扰态的影响所致 .Choosing the polarization of the laser,changing the wavelength of the excitation laser and the strength of an external electric field synchronously to keep scaled-energy constant,we have measured M0 constant scaled-energy absorption spectra of barium Rydberg atoms at scaled-energy ε-3.00.Fourier transformed recurrence spectra were compared with the closed-orbit calculation for hydrogen atom in the uniform approximation.The positions of experimental recurrence peaks fit well the theoretical ones,but the peak strengths differ remarkably,especially in the region of scaled-action larger than 5.This may indicate a large effect of the barium core and the electron correlation on the electron dynamics.

关 键 词：标度能谱 闭合轨道理论 激光偏振 傅立叶变换 双电子微扰态 钡原子 

分 类 号：O562[理学—原子与分子物理]