Electric-field-induced redistribution of radiation transition probabilities in atomic multiplet lines
Electric-field-induced redistribution of radiation transition probabilities in atomic multiplet lines
复制标题
原子多重线中电场引起的辐射跃迁概率的重新分布
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
V. D. Ovsiannikov
中科院分区：
文献类型：
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作者：
A. A. Kamenski;V. D. Ovsiannikov
本文推导了在电场中成对相互作用的多重子态之间的波函数、矩阵元素和辐射跃迁概率对静电场F0的解析依赖关系，包括自旋为S = 1/2的普通双重态、磁量子数为M = 0的三重态和五重态的成对相互作用子能级、到具有任意角L和自旋S动量和最大磁量子数|M| = L + S−1的最一般情况。证明了双重线强度在反交叉场区的均衡化和其中一条双重线在高场区的消失。确定了抗交叉场FA、多重分裂和张量极化率之间的一般关系。利用Fues模型计算氦原子中三重态和碱原子中双重态极化势的数值计算数据，采用包含有效主量子数的5、6、7次幂的三项多项式外推，在n = 1000的主量子数范围内，精度优于0.5%。
Analytical dependences on a static electric field F0 are derived for the wavefunctions, matrix elements and probabilities of radiation transitions between multiplet substates interacting in field in pairs, ranging from ordinary doublet states with spin S = 1/2, pairwise interacting sublevels of triplet and quintet states with the magnetic quantum number M = 0, to the most general case of states with arbitrary angular L and spin S momenta and maximal magnitude of the magnetic quantum number |M| = L + S − 1. Equalization of doublet line intensities in the anticrossing field region and vanishing of one of the two doublet lines in the high-field regime are demonstrated. A general relation is determined between the anticrossing field FA, multiplet splitting and tensor polarizability. The data of numerical computations with the Fues' model potential for polarizabilities of triplet states in helium and doublet states in alkali atoms are extrapolated with a three-term polynomial including 5th, 6th and 7th powers of effective principal quantum number and providing accuracy better than 0.5% in a wide range of the principal quantum number n, up to n = 1000.