Impact of electron-electron collisions on the spatial electron relaxation in non-isothermal plasmas

被引：17
|
作者：
Loffhagen, D [1 ]
机构：
[1] Inst Niedertemp Plasma Phys, D-17489 Greifswald, Germany
来源：
PLASMA CHEMISTRY AND PLASMA PROCESSING | 2005年 / 25卷 / 05期
关键词：
space-dependent kinetics; Boltzmann equation; electron-electron interaction; spatial electron relaxation; electron velocity distribution function; dc glow discharge;
D O I：
10.1007/s11090-005-4997-y
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The impact of electron-electron collisions on the spatial relaxation of electrons in the column-anode plasma of a glow discharge, acted upon by a space-independent electric field and initiated by a constant influx at the cathode side of the plasma, is investigated in inert gas plasmas. The investigations are based on a new method for numerically solving the one-dimensional inhomogeneous Boltzmann equation of the electrons including electron-electron interaction in weakly ionized, collision-dominated plasmas. A detailed analysis of the spatial behaviour of the velocity distribution function and relevant macroscopic properties of the electrons is given for various degrees of ionization and electric field strengths. A significant impact of the electron-electron collisions on the relaxation structure and the resultant relaxation length already at relatively low ionization degrees has been found for low to medium electric fields.
引用
收藏
页码：519 / 538
页数：20
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