混合详细/统计不透明度码SCO-RCG的新发展和应用
The Hybrid Detailed / Statistical Opacity Code SCO-RCG: New Developments and Applications
摘要：
我们提出了混合不透明度代码SCO-RCG，它结合了精细结构计算的统计方法。详细跃迁阵列计算所需的径向积分由SCO（Super-configuration Code for Opacity）程序计算，该程序计算有限温度和密度下的原子结构，并考虑了等离子体对波函数的影响。然后，通过R的适应RCG例程计算能级和谱线。D.考恩SCO-RCG现在包括部分可分辨跃迁阵列模型，它允许通过小规模的详细计算来替换复杂的跃迁阵列，保留真正跃迁阵列的能量和方差，并产生改进的高阶矩。最近还实施了一种研究强磁场对不透明度和发射率影响的近似方法。
英文摘要：
We present the hybrid opacity code SCO-RCG which combines statistical approaches with fine-structure calculations. Radial integrals needed for the computation of detailed transition arrays are calculated by the code SCO (Super-configuration Code for Opacity), which calculates atomic structure at finite temperature and density, taking into account plasma effects on the wave-functions. Levels and spectral lines are then computed by an adapted RCG routine of R. D. Cowan. SCO-RCG now includes the Partially Resolved Transition Array model, which allows one to replace a complex transition array by a small-scale detailed calculation preserving energy and variance of the genuine transition array and yielding improved high-order moments. An approximate method for studying the impact of strong magnetic field on opacity and emissivity was also recently implemented.
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