Stark效应诱导的类氢离子2s_(1/2)-1s_(1/2)跃迁几率的理论研究  

Theoretical investigation on Stark-induced transition probabilities of hydrogen-like ions

作　　者：万建杰[1] 赵鑫婷 李冀光 董晨钟[1] Wan Jian-Jie;Zhao Xin-Ting;Li Ji-Guang;Dong Chen-Zhong(College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China;Institute of Applied Physics and Computational Mathematics,Beijing 100088,China)

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《物理学报》2021年第17期109-118,共10页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11874090,12075193);甘肃省自然科学基金(批准号:20JR10RA084);甘肃省基础研究创新群体项目(批准号:20JR5RA541);甘肃省自然科学基金青年科技计划(批准号:1506RJYA131);西北师范大学青年教师科研能力提升计划(批准号:NWNU-LKQN-10-7);西北师范大学物理与电子工程物理学科科研创新团队项目资助的课题.

摘　　要：基于微扰理论研究了静电场Stark效应诱导的类氢离子2s_(1/2)-1s_(1/2)跃迁,给出了Z=1-92类氢离子的Stark混合系数和2s_(1/2)-1s_(1/2)跃迁几率,讨论了Stark效应诱导的类氢离子2s_(1/2)-1s_(1/2)跃迁几率随原子序数的变化规律以及相对论效应对Stark混合系数和诱导跃迁几率的影响.结果表明,给定电场强度时,类氢离子的Stark诱导跃迁几率随着原子序数Z的增大单调减小.另外,相对论效应使得类氢离子的Stark诱导跃迁几率减小,甚至在Z=92时会减小到非相对论近似的55%.Based on the nondegenerate perturbation theory,the Stark-induced transitions are studied for hydrogen-like isoelectronic sequences(Z=1–92).The Stark-induced mixing coefficients and transition probabilities between the 2s_(1/2)-1s_(1/2) levels of hydrogen-like ions are reported.The trend of Stark-induced transition probabilities varying with atomic number Z between 2s_(1/2)-1s_(1/2) levels of hydrogen-like ions and the relativistic effect on the Stark-induced mixing coefficients and transition probabilities are discussed.The scaling relations of the nonrelativistic and relativistic Stark-induced transition probabilities with atomic number Z are obtained.The results show that the Stark-induced transition probabilities of hydrogen-like ions decrease monotonically along the isoelectronic sequence with the increase of atomic number Z.In addition,the relativistic effect reduces the Stark-induced transition probabilities of hydrogen-like ions,for example,by about 55%at Z=92.

关 键 词：Stark诱导跃迁 STARK效应 类氢离子 标度关系 

分 类 号：O562[理学—原子与分子物理]