Scattering phenomena between charged particles and highly excited Rydberg atoms are of critical importance in many processes in plasma physics and astrophysics. While a Maxwell–Boltzmann (MB) energy distribution for the charged particles is often assumed for calculations of collisional rate coefficients, in this contribution we relax this assumption and use two different energy distributions, a bimodal MB distribution and a $\unicode[STIX]{x1D705}$ -distribution. Both variants share a high-energy tails occurring with higher probability than the corresponding MB distribution. The high-energy tail may significantly affect rate coefficients for various processes. We focus the analysis to specific situations by showing the dependence of the rate coefficients on the principal quantum number of hydrogen atoms in $n$ -changing collisions with electrons in the excitation and ionization channels and in a temperature range relevant to the divertor region of a tokamak device. We finally discuss the implications for diagnostics of laboratory plasmas.

中文翻译：

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里德堡等离子体中电子和离子碰撞的非麦克斯韦速率系数：对激发和电离的影响

带电粒子和高度激发的里德堡原子之间的散射现象在等离子体物理学和天体物理学的许多过程中至关重要。虽然通常假设带电粒子的麦克斯韦-玻尔兹曼 (MB) 能量分布用于计算碰撞率系数，但在本文中，我们放宽了这一假设并使用了两种不同的能量分布，双峰 MB 分布和 $\unicode[STIX]{x1D705}$ -分配。两种变体共享一个高能尾部，其发生概率高于相应的 MB 分布。高能尾部可能会显着影响各种过程的速率系数。我们通过显示速率系数对氢原子主量子数的依赖性将分析重点放在特定情况 $n$ -在激发和电离通道中以及在与托卡马克装置的偏滤器区域相关的温度范围内改变与电子的碰撞。我们最后讨论了对实验室血浆诊断的影响。