Benchmarking Multiconfiguration Dirac–Hartree–Fock Calculations for Astrophysics: Si-like Ions from Cr xi to Zn xvii
Benchmarking Multiconfiguration Dirac–Hartree–Fock Calculations for Astrophysics: Si-like Ions from Cr xi to Zn xvii
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DOI：
10.3847/1538-4365/ac2a3f
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发表时间：
2021-12
期刊：
影响因子：
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通讯作者：
X. H. Zhang;G. del Zanna;K. Wang;P. Rynkun;P. Jönsson;M. Godefroid;G. Gaigalas;L. Radžiūtė
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文献类型：
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作者：
X. H. Zhang;G. del Zanna;K. Wang;P. Rynkun;P. Jönsson;M. Godefroid;G. Gaigalas;L. Radžiūtė
用多组态Dirac-Hartree-Fock（MCDHF）和相对论组态相互作用方法计算了604的激发能、寿命和辐射跃迁数据（699、702、704、704和699）3s 23 p 2、3s 3 p 3、3s 23 p3 d、3 p 4、3s 3 p 23 d、3s 23 d 2、3 p 33 d、3s 3 p3 d 2、3s 3d 3、3 p3 d 3、3 p 23 d 2的最低水平，在Cr xi（Mn xii、Fe xiii、Co xiv、Ni xv、Cu xvi和Zn xvii）中的3s 23p4s、3s 23p4p、3s 23p4d、3s 23p4f、3s3p 24s、3s3p 24p、3s3p 24d、3s3p 24f、3s 23d4s、3s 23d4p、3p 34s、3p 34p、3s3p3d4s、3s 23p5s和3s 23p5p构型。通过将MCDHF理论结果与现有的实验数据进行全面比较，回顾了在EUV和X射线波长范围内Fe xiii和Ni xv的先前线识别。许多最近的Fe XIII和Ni XV线的鉴定得到证实，并提出了这两个离子的几个新的鉴定。一个一致的原子光谱精度的数据集提供了最低的数百个级别的类硅离子的铁族元素的天体物理学的兴趣，实验值是稀缺的。Kramida提出的不确定度估计方法，应用于长度和速度线强度值的比较，用于对转捩数据进行排序。后者的相关性与线强度的规范依赖模式进行了研究。
The multiconfiguration Dirac–Hartree–Fock (MCDHF) and relativistic configuration interaction methods are used to provide excitation energies, lifetimes, and radiative transition data for the 604 (699, 702, 704, 704, 704, and 699) lowest levels of the 3s 23p 2, 3s3p 3, 3s 23p3d, 3p 4, 3s3p 23d, 3s 23d 2, 3p 33d, 3s3p3d 2, 3s3d 3, 3p3d 3, 3p 23d 2, 3s 23p4s, 3s 23p4p, 3s 23p4d, 3s 23p4f, 3s3p 24s, 3s3p 24p, 3s3p 24d, 3s3p 24f, 3s 23d4s, 3s 23d4p, 3p 34s, 3p 34p, 3s3p3d4s, 3s 23p5s, and 3s 23p5p configurations in Cr xi, (Mn xii, Fe xiii, Co xiv, Ni xv, Cu xvi, and Zn xvii). Previous line identifications of Fe xiii and Ni xv in the EUV and X-ray wavelength ranges are reviewed by comprehensively comparing the MCDHF theoretical results with available experimental data. Many recent identifications of Fe xiii and Ni xv lines are confirmed, and several new identifications for these two ions are proposed. A consistent atomic data set with spectroscopic accuracy is provided for the lowest hundreds of levels for Si-like ions of iron-group elements of astrophysical interest, for which experimental values are scarce. The uncertainty estimation method suggested by Kramida, applied to the comparison of the length and velocity line strength values, is used for ranking the transition data. The correlation of the latter with the gauge dependency patterns of the line strengths is investigated.