Energy levels, radiative rates and electron impact excitation rates for transitions in He-like N VI, F VIII and Na X
Energy levels, radiative rates and electron impact excitation rates for transitions in He-like N VI, F VIII and Na X
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DOI：
10.1088/0031-8949/80/04/045301
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发表时间：
2009-09
期刊：
影响因子：
2.9
通讯作者：
K. Aggarwal;F. Keenan;R. Heeter
中科院分区：
文献类型：
--
作者：
K. Aggarwal;F. Keenan;R. Heeter
本文计算了类氦NVI、FVIII和NaX的能级、辐射率和电子碰撞激发率。采用通用相对论原子结构程序包（GRASS）计算能级和辐射率，采用狄拉克原子R矩阵程序（DARC）和柔性原子程序（FAC）计算碰撞强度和激发率。给出了NVI、FVIII和NaX的最低49个能级中所有E1、E2、M1和M2跃迁的振子强度、辐射率和谱线强度。在麦克斯韦速度分布上对碰撞强度进行了平均，并在低于107K的宽温度范围内报告了由此获得的有效碰撞强度。此外，还报告了上述三种离子的所有计算水平的寿命。
In this paper, we report calculations for energy levels, radiative rates and electron impact excitation rates for transitions in He-like N VI, F VIII and Na X. The general-purpose relativistic atomic structure package (grasp) is adopted for calculating energy levels and radiative rates, and for determining the collision strengths and subsequently the excitation rates, the Dirac atomic R-matrix code (darc) and the flexible atomic code (fac) are used. Oscillator strengths, radiative rates and line strengths are reported for all E1, E2, M1 and M2 transitions among the lowest 49 levels of N VI, F VIII and Na X. Collision strengths have been averaged over a Maxwellian velocity distribution and the effective collision strengths so obtained are reported over a wide temperature range below 107 K. Additionally, lifetimes are also reported for all calculated levels of the above three ions.