Title :
Coherent structures in crossed-field closed-drift Hall discharges
Author :
Cappelli, Mark A. ; Hargus, William A., Jr. ; Meezan, Nathan B.
Author_Institution :
Dept. of Mech. Eng., Stanford Univ., CA, USA
fDate :
2/1/1999 12:00:00 AM
Abstract :
The structure of a magnetized, collisionless crossed-field coaxial Hall discharge is investigated using low-impedance, negatively biased Langmuir probes. We present images depicting frequency-position renderings and cross-correlation plots, which identify coherent and random fluctuations in plasma density. These fluctuations are found to depend on the discharge operating conditions, and are believed to greatly affect cross-field electron transport
Keywords :
Langmuir probes; discharges (electric); plasma density; plasma fluctuations; plasma magnetohydrodynamics; plasma turbulence; coherent fluctuations; coherent structures; cross-correlation plots; cross-field electron transport; crossed-field closed-drift Hall discharges; discharge operating conditions; frequency-position renderings; low-impedance negatively biased Langmuir probes; magnetized collisionless crossed-field coaxial Hall discharge; plasma density; plasma propulsion; plasma turbulence; random fluctuations; Anodes; Cathodes; Electrons; Fluctuations; Magnetic fields; Plasma density; Plasma transport processes; Probes; Propulsion; Saturation magnetization;
Journal_Title :
Plasma Science, IEEE Transactions on
