论文标题
Rydberg等离子体中电子和离子碰撞的非马克斯威尔速率系数：激发和电离的影响
Non-Maxwellian rate coefficients for electron and ion collisions in Rydberg plasmas: implications for excitation and ionization
论文作者
论文摘要
在等离子体物理和天体物理学的许多过程中，带电颗粒与高度激发的Rydberg原子之间的散射现象至关重要。虽然通常假定为碰撞速率系数计算带电颗粒的麦克斯韦 - 波尔兹曼（MB）能量分布，但在此贡献中，我们放宽了这一假设并使用两个不同的能量分布，即双峰MB分布和$κ$ $ $ $κ$ distribution。这两种变体共享一个高能量的尾巴，其概率高于相应的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nchang和电离通道中的电子碰撞中的主量子数的依赖性以及与tokamak装置的转移区域相关的温度范围中的氢原子的主要量子数，将分析集中在特定情况下。我们终于讨论了对实验室等离子体诊断的影响。
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 $κ$-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.
