Hot plasma production in quasisteady arc discharge for divertor plasma simulator

A. A. Kabantsev, V. B. Reva, V. G. Sokolov
1998 Review of Scientific Instruments  
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 ͑1982͔͒. 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
more » ... 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: TeϷ50 eV, nϷ5ϫ10 13 cm Ϫ3 , TiϷ200 eV, and qϷ1 -10 kW/cm 2 .
doi:10.1063/1.1149134 fatcat:jitey6iq7bcxbpirz4rfl2smji