Radial distributions of RF discharge plasma parameters and radial electric field in the Uragan-3M torsatron

Abstract

The results of local measurements of RF discharge plasma parameters (plasma density and its fluctuations, electron temperature and energy of superthermal electrons, plasma poloidal rotation velocity) in the Uragam-3M torsatron are presented. The obtained data are analyzed taking into account the peculiarities of the Uragan-3M magnetic configuration and scenario of RF plasma production and heating. Some suppositions about mechanisms of a radial electric field generation are discussed with the calculation of a magnetic configuration island structure.