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arXiv physics/0702066physics.atom-ph
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用耦合团方法精确估算四重电离钒的星周和星际谱线

Accurate estimations of circumstellar and interstellar lines of quadruply ionized vanadium using the coupled cluster approach

Gopal Dixit, B. K. Sahoo, P. C. Deshmukh, R. K. Chaudhuri, Sonjoy Majumder

摘要:

用精确的{ \it ab initio}计算方法研究了钒四重电离态$V^{4+}$的价电子去除能和振子强度.许多重要的电子关联被考虑到所有的订单使用相对论耦合集团理论。计算的电离势和精细结构分裂与实验值进行比较,只要有。据我们所知,电偶极跃迁的振子强度是第一次预测的过渡。这些跃迁跨越紫外线、可见光和近红外区域,对天体物理观测很重要。

英文摘要:

Accurate {\it ab initio} calculations have been carried out to study the valence electron removal energies and oscillator strengths of astrophysically important electromagnetic transitions of quadruply ionized vanadium, $V^{4+}$. Many important electron correlations are considered to all-orders using the relativistic coupled-cluster theory. Calculated ionization potentials and fine structure splittings are compared with the experimental values, wherever available. To our knowledge, oscillator strengths of electric dipole transitions are predicted for the first time for most of the transitions. The transitions span in the range of ultraviolet, visible and near infrared regions and are important for astrophysical observations.

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