Investigations of Probe Induced Perturbations in a Hall Thruster

Staack, D. ; Raitses, Y. ; Fisch, N.J.

Princeton University. Plasma Physics Laboratory.

关键词: Ion Sources;    Shielding;    70 Plasma Physics And Fusion Technology;    Plasma-Wall Interation;    Thrusters Gas Discharges;   

DOI  :  10.2172/808387
RP-ID  :  PPPL-3738
RP-ID  :  AC02-76CH03073
RP-ID  :  808387

美国|英语

来源: UNT Digital Library

【 摘 要 】

An electrostatic probe used to measure spatial plasma parameters in a Hall thruster generates perturbations of the plasma. These perturbations are examined by varying the probe material, penetration distance, residence time, and the nominal thruster conditions. The study leads us to recommendations for probe design and thruster operating conditions to reduce discharge perturbations, including metal shielding of the probe insulator and operation of the thruster at lower densities.