Multiconfiguration Dirac-Hartree-Fock calculations of energy levels and radiative rates of Fe VII

作者:Li, Yang; Xu, Xiaokai; Li, Bowen*; Jonsson, Per; Chen, Ximeng
来源:Monthly Notices of the Royal Astronomical Society, 2018, 479(1): 1260-1266.
DOI:10.1093/mnras/sty1534

摘要

Detailed calculations arc performed for 134 fine-structure levels of the 3p(6)3d(2), 3p(6)3d4s, 3p(5)3d(3) and 3p(6)3d4p configurations in Fe ViT using the multiconfiguration Dirac-Hartree-Fock (MCDHF) and relativistic configuration interaction (RCI) methods. Important electron correlation effects are systematically accounted for through active space (AS) expansions. Our results compare well with experimental measurements, emphasizing the importance of a careful treatment of electron correlation, and provide some missing data in the NIST atomic database. The data obtained are expected to be useful in astrophysical applications, particularly for the research of the solar coronal plasma.