Plasma heating in the TM-3 tokamak by means of electron cyclotron resonance at magnetic fields up to 25 kOe

The results of an experimental investigation of electroncyclotron heating (ECH) of plasma in the TM-3 facility with longitudinal magnetic fields up to 25 kO are presented. The electron temperature distribution in the ECH process has been measured by laser scattering. The experiments have been carried out without noticeable heating of runaway electrons, the duration of heating being 750 ms. These experiments reveal a linear cyclotron mechanism of SHF power absorption. The dependence of the energy lifetime of the main component of plasma in the tokamak on temperature has been measured more exactly than it has been done before. The quantity βj approximately 2.2 has been achieved without breaking stability and equilibriun losses of the plasma filament. The lifetime of accelerated electrons has been found to increase with their longitudinal energy