H, He-like recombination spectra - IV. Clarification and refinement of methodology for l -changing collisions
H, He-like recombination spectra - IV. Clarification and refinement of methodology for l -changing collisions
复制标题
H，类 He 复合光谱 - IV。
DOI：
10.1093/mnras/stab2266
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发表时间：
2022
影响因子：
4.8
通讯作者：
Badnell N
中科院分区：
文献类型：
--
作者：
Badnell N
精确的光谱诊断模型的HiandHeiRecombination光谱可以限制理论模型，描述许多天体物理环境。简单的解析表达式是感兴趣的collisionall-changing率系数，用于大规模人口建模代码。我们回顾，澄清，并改进后的修改Pengelly和西顿公式的古兹曼等人。我们表明，最近的不良结果，它所示的Vrinceanu等人。是因为他们对它的用法的误解。我们还详细介绍了高效的数值算法，这应该使充分的量子力学表达这样的速率系数更经常地使用建模代码。我们说明了一些碰撞辐射人口模型的氢。
Precise spectral diagnostic modelling of Hiand Heiirecombination spectra can constrain theoretical models that describe many astrophysical environments. Simple analytic expressions are of interest for collisionall-changing rate coefficients that are used by large-scale population modelling codes. We review, clarify, and improve upon the modified Pengelly & Seaton formulae of Guzmán et al. We show that the recent poor results for it shown by Vrinceanu et al. are due to their misinterpretation of its usage. We also detail efficient numerical algorithms which should enable the full quantum mechanical expression for such rate coefficients to be used much more routinely by modelling codes. We illustrate with some collisional-radiative population modelling for hydrogen.