Free-molecule flow of neutral particles with density depleted by ionization

被引：0
|
作者：
V. P. Shumilin
A. V. Shumilin
N. V. Shumilin
机构：
[1] All-Russia Electrotechnical Institute,
[2] Moscow Institute of Physics and Technology (State University),undefined
[3] Moscow State Institute of Electronics and Mathematics (Technical University),undefined
来源：
High Temperature | 2012年 / 50卷
关键词：
Neutral Particle; Flow Density; Emitter Surface; Absolute Velocity; Slow Particle;
D O I：
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学科分类号：
摘要：
Free-molecule flow of neutral particles is considered in the kinetic approximation under conditions of strong ionization depletion. The problem is solved for an arbitrary semi-isotropic distribution function of particles by velocities at the surface of the emitter. The kinetic effects of preferential depletion of tangentially flying and slow particles are considered. The kinetic equation is solved for the emitter having the forms of a plane, semi-plane, strip, and circle. The average densities, flow densities, and average hydrodynamic velocities are calculated. The expressions for ionization probability of the working gas in channels of Hall thrusters are obtained.
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页码：178 / 185
页数：7
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