High-frequency Probing Diagnostic for Hall Current Plasma Thrusters

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

Princeton University. Plasma Physics Laboratory.

关键词: 33 Advanced Propulsion Systems;    Thrusters;    Plasma Waves;    Oscillations;    Langmuir Probe;   

DOI  :  10.2172/788452
RP-ID  :  PPPL-3622
RP-ID  :  AC02-76CH03073
RP-ID  :  788452

美国|英语

来源: UNT Digital Library

【 摘 要 】

High-frequency oscillations (1-100 MHz) in Hall thrusters have apparently eluded significant experimental scrutiny. A diagnostic setup, consisting of a single Langmuir probe, a special shielded probe connector-positioner, and an electronic impedance-matching circuit, was successfully built and calibrated. Through simultaneous high-frequency probing of the Hall thruster plasma at multiple locations, high-frequency plasma waves have been identified and characterized for various thruster operating conditions.