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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Excitation energies, oscillator strengths and lifetimes in Mg-like vanadium
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Excitation energies, oscillator strengths and lifetimes in Mg-like vanadium

机译：镁状钒的激发能，振荡器强度和寿命

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摘要

Excitation energies from the ground state for 86 fine-structure levels as well as oscillator strengths and radiative decay rates for all fine-structure transitions among the levels of the terms (1s~22s~22p ~6)3s~2(~1S), 3s3p(~(~(1,3))Po), 3s3d(~(~(1,3))D), 3s4s(~(1,3)S), 3s4p(~(1,3)Po), 3s4d(~(1,3)D), 3s4f(~(1,3)Fo), 3p2(1S, 3P, 1D), 3p3d(~(1,3)Po, ~(1,3)Do, 1,3Fo), 3p4s(1,3Po), 3p4p(~(1,3)S, ~(1,3)P, ~(1,3)D), 3p4d(~(1,3)Po, ~(1,3)Do, 1,3Fo), 3p4f(~(1,3)D, 1,3F, 1,3G) and 3d2(1S, 3P, ~1D,~3F,~1G) of V XII are calculated using extensive configuration-interaction wave functions obtained with the configuration-interaction version 3 computer code of Hibbert. The important relativistic effects in intermediate coupling are included through the Breit-Pauli approximation. In order to keep our calculated energy splittings as close as possible to the corresponding experimental values, we have made small adjustments to the diagonal elements of the Hamiltonian matrices. The mixing among several fine-structure levels is found to be very strong. Our fine-tuned excitation energies, including their ordering, are in excellent agreement (better than 0.25%) with the available experimental results. From our calculated radiative decay rates, we have also calculated the radiative lifetimes of fine-structure levels. Generally, our calculated data for the excitation energies and radiative decay rates are found to agree reasonably well with other available calculations. However, significant differences between our calculated lifetimes and those from the calculation of Froese Fischer et al (2006 At. Data Nucl. Data Tables 92 607) for a few fine-structure levels, mainly those belonging to the 3p4d configuration, are noted and discussed. Also, our calculated lifetime for the longer-lived level 3s3p(~3P1) is found to be in excellent agreement with the corresponding value of Curtis (1991 Phys. Scr. 43 137).
机译：在（1s〜22s〜22p〜6）3s〜2（〜1S）的水平之间，从基态激发出86种精细结构能级的激发能，以及所有精细结构转换的振子强度和辐射衰减率， 3s3p（〜（〜（1,3））Po），3s3d（〜（〜（1,3））D），3s4s（〜（1,3）S），3s4p（〜（1,3）Po）， 3s4d（〜（1,3）D），3s4f（〜（1,3）Fo），3p2（1S，3P，1D），3p3d（〜（1,3）Po，〜（1,3）Do，1 ，3Fo），3p4s（1,3Po），3p4p（〜（1,3）S，〜（1,3）P，〜（1,3）D），3p4d（〜（1,3）Po，〜（计算出V XII的1,3）Do，1,3Fo），3p4f（〜（1,3）D，1,3F，1,3G）和3d2（1S，3P，〜1D，〜3F，〜1G）使用通过Hibbert的配置交互版本3计算机代码获得的广泛的配置交互波动函数。中间耦合的重要相对论效应包括在Breit-Pauli近似中。为了使我们计算出的能量分裂尽可能接近相应的实验值，我们对哈密顿矩阵的对角元素进行了小的调整。发现几个精细结构水平之间的混合非常强烈。我们经过微调的激发能，包括其有序化，与可获得的实验结果非常吻合（优于0.25％）。根据我们计算出的辐射衰减率，我们还计算了精细结构能级的辐射寿命。通常，我们的激发能和辐射衰减率的计算数据与其他可用计算相当吻合。但是，我们注意到并讨论了我们计算出的寿命与Froese Fischer等人（2006年At.Data Nucl.Data Tables 92607）的计算结果之间的显着差异，这些细微结构水平主要是属于3p4d构型的。 。同样，我们计算出的寿命更长的3s3p（〜3P1）的寿命与Curtis的相应值（1991 Phys。Scr。43137）也非常吻合。

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