类镍离子精细结构能级和辐射寿命

高离化和高激发原子结构参数和跃迁参数的精确计算,对天体物理、热核聚变实验、等离子体诊断和束箔光谱的识别,特别是对真空紫外激光器的研究都有重要的意义.用加Breit修正和QED修正的全相对论多组态自洽场方法,计算了类镍钼离子Mo XV的1s、2s、2p-、2p、3s、3p-、3p、3d-、3d、4s、4p-、4p、4d-、4d、4f-、4f、5s、5p-、5p、5d-、5d、5f-、5f、5g-、5g、6s、6p-、6p、6d-、6d、6f-、6f、6g-、6g轨道的1772个精细结构能级和辐射寿命以及各能级间的电偶极、磁偶极、电四极和磁四极跃迁的跃迁波长、跃迁几率和振子强度,能级的计算值和已知实验值之间的相对误差小于0.38%.从计算结果中发现了一些寿命较长的亚稳态能级.

Fine-structure Energy Levels and Radiative Lifetime in Ni-like Ions

The high-precision calculations of the structure and transition parameters for highly ionized and highly excited atoms are important in astrophysics, hot fusion experiment, distinguish of the beam-foil spectum and plasma diagnostics, particularly for the research on XUV lasers. Fine-structure levels, radiative lifetime and various transition parameters for all of the electric dipole(E1), magnetic dipole(M1), eletric quadrupole(E2) and magnetic quadrupole(M2) transitions among the 1772 fine-structure levels belong to the (1s~(2)2s~(2)2p~(6)3s~(2)3p~(6)) 3d~(10), 3d~(9)4l, 3d~(9)5l, 3d~(9)6l, 3d~(8)4s~(2), 3d~(8)4l4l' et al., and configurations of the Ni-like ions Mo XV have been calculated using the fully relativistic Multi-configuration Dirac-Fock method with the inclusion of the Breit interaction and QED corrections. The results are compared with those available in the literature, and the accuracy of the present data is assessed. Energy levels are expected to be accurate to within 0.38%. We have found some long-lived levels, which are called anomalous stability state.