ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
This article describes a type quasisteady arc plasma source developed for investigation of edge plasma physics in a fusion device. The source is a modification of the gas-loaded washer-stack plasma gun [J. Osher, Rev. Sci. Instrum. 53, 1685 (1982)]. One of the principal features of describing the source is the formation of electrostatic thermobarrier for plasma electrons near the output of the plasma source. It has been created by changing the polarity of the voltage applied to the discharge as compared with the conventional case. In a new configuration of electrodes, the electrons are accelerated to the back of the injection direction of the plasma flow. A thermobarrier makes it possible to reach the following plasma parameters: Te(approximate)50 eV, n(approximate)5×1013 cm−3, Ti(approximate)200 eV, and q(approximate)1–10 kW/cm2. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1149134
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