Diocotron and Trivelpiece-Gould mode behavior in toroidal electron plasma

MR Stoneking, JW Darrell, SA Exarhos… - AIP Conference …, 2013 - pubs.aip.org
Electron plasma confined in a purely toroidal magnetic field supports analogs of the
electrostatic normal modes observed in cylindrical traps-namely diocotron and Trivelpiece-
Gould waves. The Lawrence Non-neutral Torus II (LNT II) device is used to study such
waves. Electron plasma with densities in the range of 107 cm− 3 persisting for about 1
second are produced in LNT II with high vacuum conditions (< 10− 9 Torr), a toroidal
magnetic field magnitude up to 550 G. The plasma is diagnosed by monitoring image …
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