Resistive Instabilities in Hall Current Plasma Discharge.

Litvak, A. A. ; Fisch, N. J.

Technical Information Center Oak Ridge Tennessee

关键词: Acceleration;    Hydrodynamic model;    Electrons;    Electrostatics;    Geometry;   

RP-ID  :  DE2001768665

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Plasma perturbations in the acceleration channel of a Hall thruster are found to be unstable in the presence of collisions. Both electrostatic lower-hybrid waves and electromagnetic Alfven waves transverse to the applied electric and magnetic field are found to be unstable due to collisions in the E X B electron flow. These results are obtained assuming a two-fluid hydrodynamic model in slab geometry. The characterisitic frequencies of these modes are consistent with experimental observations in Hall current plasma thrusters.