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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Oscillator strengths and lifetimes in Ge XXI
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Oscillator strengths and lifetimes in Ge XXI

机译：Ge XXI的振荡器优势和寿命

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摘要

We have calculated energy splittings of 53 fine- structure levels as well as oscillator strengths and radiative decay rates for all electric-dipole-allowed and intercombination transitions among the (1s(2)2s(2)2p(6)) 3s(2)(1S), 3s3p(P-1,P-3 degrees), 3s3d(D-1,D-3), 3s4s(S-1,S-3), 3s4p(P-1,P-3 degrees), 3s4d(D-1,D-3), 3s4f(F-1,F-3 degrees), 3p(2)(S-1, P-3, D-1), 3p3d(P-1,P-3 degrees, D-1,D-3 degrees, F-1,F-3 degrees), 3p4s(P-1,P-3 degrees) and 3d2(S-1, P-3, D-1, F-3, (1)G) states of Ge XXI, using extensive configuration - interaction (CI) wavefunctions, obtained with the CIV3 computer code of Hibbert. The important relativistic effects in intermediate coupling are incorporated by means of the Breit-Pauli Hamiltonian. In order to keep our calculated energy splittings as close as possible to the experimental values, we have made small adjustments to the diagonal elements of the Hamiltonian matrices. Our excitation energies, including their ordering, are in excellent agreement with the available experimental results. The enormous mixing among several fine- structure levels makes it very difficult to identify them correctly with the result that their positions in the calculation of Ivanova et al are interchanged compared to our results and the experimental values. From our transition probabilities, we have also calculated radiative lifetimes of some fine- structure levels. Our calculated oscillator strengths and the lifetimes are found to be in good agreement with the other available theoretical results. In this calculation, we also predict new data for several fine- structure levels where no other theoretical and/or experimental results are available.
机译：我们已经计算了（1s（2）2s（2）2p（6））3s（2）之间所有电偶极子允许和相互结合跃迁的53个精细结构能级的能量分裂以及振荡器强度和辐射衰减率（1S），3s3p（P-1，P-3度），3s3d（D-1，D-3），3s4s（S-1，S-3），3s4p（P-1，P-3度）， 3s4d（D-1，D-3），3s4f（F-1，F-3度），3p（2）（S-1，P-3，D-1），3p3d（P-1，P-3）度，D-1，D-3度，F-1，F-3度），3p4s（P-1，P-3度）和3d2（S-1，P-3，D-1，F-3 ，使用广泛的配置-相互作用（CI）波函数，通过希伯特的CIV3计算机代码获得Ge XXI的（1）G态。中间耦合中的重要相对论效应是通过Breit-Pauli Hamiltonian合并的。为了使我们计算出的能量分裂尽可能接近实验值，我们对哈密顿矩阵的对角元素进行了小的调整。我们的激发能，包括其有序性，与现有的实验结果非常吻合。几个精细结构级别之间的巨大混合使得很难正确识别它们，结果与我们的结果和实验值相比，它们在Ivanova等人的计算中的位置被互换了。根据过渡概率，我们还计算了一些精细结构水平的辐射寿命。我们计算出的振荡器强度和寿命与其他可用的理论结果非常吻合。在此计算中，我们还预测了几个其他没有其他理论和/或实验结果的精细结构水平的新数据。

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