High-frequency probing diagnostic for Hall current plasma thrusters

A. A. Litvak, Y. Raitses, N. J. Fisch
2002 Review of Scientific Instruments  
High-frequency oscillations ͑1-100 MHz͒ in Hall thrusters have not received sufficient 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 successfully identified and characterized ͑Ref. 1͒.
doi:10.1063/1.1494857 fatcat:k7fnmy3ntndv3jfglgsii4gt5a