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

Volume

27

Issue

1

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

96

Lastpage

97

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.763061

Filename

763061