HIR：用于具有各向异性快离子的等离子体中氢电离的碰撞辐射模型
HIR: A collisional-radiative model for hydrogen ionization in plasma with anisotropic fast ions
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中文总结 AI 辅助
介绍用于计算热等离子体中氢原子电离相关情况的HIR软件包，基于稳态碰撞辐射模型，分析了逐步电离对快原子平均自由程等的影响，发现快离子分布各向异性影响小，还计算了氢原子电离成本，该软件包可在GitHub获取。
中文摘要 AI 辅助
本文介绍了用于计算热等离子体中氢原子能级分布及其电离动力学的HIR（氢电离率）软件包，包括具有各向异性分布函数的快离子情况。该代码基于稳态碰撞辐射模型，涵盖电子和离子的碰撞激发、去激发、电离、电荷交换及自发辐射跃迁。研究表明，通过激发态的逐步电离对总电离率贡献高达20%，需要包含主量子数N = 8以下的能级。针对GDML和GOL - NB磁镜陷阱装置，分析了逐步电离对快原子平均自由程的影响。结果显示，由于逐步电离，与不同等离子体物种的碰撞是非加性的，在40keV时平均自由程最多降低7%。发现快离子分布的各向异性对GDML等离子体中的电离动力学影响可忽略不计（小于1%）。计算了GOL - NB等离子体中氢原子的电离成本，表明由于碰撞和辐射去激发之间的竞争，其强烈依赖于等离子体密度。HIR软件包可在GitHub上公开获取。
英文摘要
The paper presents the HIR (Hydrogen Ionization Rates) software package developed for calculating the level populations of atomic hydrogen and the dynamics of its ionization in hot plasma, including the case of fast ions with an anisotropic distribution function. The code is based on a steady-state collisional-radiative model that includes electron and ion impact excitation, de-excitation, ionization, charge exchange, and spontaneous radiative transitions. It is demonstrated that stepwise ionization via excited states contributes up to 20% to the total ionization rate and requires including levels up to the principal quantum number N=8. For the GDML and GOL-NB mirror trap facilities, the effects of stepwise ionization on the mean free path of fast atoms are analyzed. It is shown that collisions with different plasma species are non-additive due to stepwise ionization, leading to a reduction in the mean free path by up to 7% at 40 keV. The anisotropy of the fast ion distribution is found to have a negligible effect (less than 1%) on the ionization dynamics in the GDML plasma. The ionization cost of hydrogen atoms in the GOL-NB plasma is calculated, demonstrating a strong dependence on plasma density due to competition between collisional and radiative de-excitation. The HIR package is openly available on GitHub.
