论文标题
单个电离灯笼元件的能级和过渡速率的扩展计算I：PR -GD
Extended calculations of energy levels and transition rates for singly ionized lanthanide elements I: Pr - Gd
论文作者
论文摘要
灯笼元素在中子恒星合并的弹出材料中起着不透明的来源的重要作用。准确而完整的原子数据是为了评估缺陷性和分析观察到的数据所必需的。在本文中，我们执行从PR II（Z = 59）到GD II（Z = 64）的扩展的Ab-Initio原子量计算。通过使用多种污染的狄拉克 - 摩托克和相对论的配置相互作用方法，在通用相对论原子结构包GRASP2K中实现，我们计算了电偶极过渡的能量水平和过渡数据。这些计算基于Gaigalas等人发表的ND II的策略（较小）。 （2019）。通过将计算能水平与NIST数据库或其他工作进行比较来评估数据的准确性。对于能量水平，与NIST数据相比，PR II，PM II，SM II，EU II，EU II和GD II离子的平均相对准确度分别为8％，12％，6％，8％和7％。 PR II，EU II和GD II的能量转移到波长的精度为3％，14％和11％。我们计算的E1类型过渡概率与其他作者提出的实验值非常吻合。
Lanthanide elements play important roles as an opacity source in the ejected material from neutron star mergers. Accurate and complete atomic data are necessary to evaluate the opacities and to analyze the observed data. In this paper, we perform extended, ab-initio atomic calculations from Pr II (Z=59) to Gd II (Z=64). By using multiconfiguration Dirac-Hartree-Fock and relativistic configuration-interaction methods, implemented in the general-purpose relativistic atomic structure package GRASP2K, we calculate the energy levels and transition data of electric dipole transitions. These computations are based on strategies (with small variations) of Nd II published by Gaigalas et al. (2019). Accuracy of data is evaluated by comparing computed energy levels with the NIST database or other works. For the energy levels, we obtain the average relative accuracy of 8%, 12%, 6%, 8%, and 7% for Pr II, Pm II, Sm II, Eu II, and Gd II ions, respectively as compared with the NIST data. Accuracy of energy transfer to the wavelength as 3%, 14% and 11% for Pr II, Eu II and Gd II. Our computed E1 type transition probabilities are in good agreement with experimental values presented by other authors especially for strong transitions.
