Collisional rates and cooling within atomic hydrogen plasmas
Collisional rates and cooling within atomic hydrogen plasmas
复制标题
原子氢等离子体内的碰撞速率和冷却
DOI：
10.1086/170587
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
H. Walters
中科院分区：
文献类型：
--
作者：
T. Scholz;H. Walters
精确的碰撞率电子碰撞电离基态的氢原子的评价卷积的实验截面与麦克斯韦分布的电子能量。对1 s-2s和1 s-2 p散射率的工作也作了扩展。这些结果补充了半经验碰撞率为其他激发过程产生的光学薄氢等离子体的冷却速率。对2 × 103 ~ 1 × 108 K温度范围内的数值结果进行了评价，并与易于编入计算机程序的简单解析式进行了拟合
Accurate collisional rates for electron impact ionization of the ground state of atomic hydrogen are evaluated by convolving the experimental cross section with a Maxwellian distribution of electronic energies. An extension of previous work on 1s-2s and 1s-2p scattering rates is also reported. These results are supplemented by semiempirical collisional rates for other excitation processes to yield the cooling rate for optically thin hydrogen plasmas. The numerical results are evaluated for temperatures ranging from 2 × 10 3 K to 1 × 10 8 K and fitted to simple analytic designed to be easily incorporated into computer programs