FIELD: electrical engineering. SUBSTANCE: emitter is made as single assembly of electrode systems of auxiliary circular and main volume discharges. It has common anode and cathodes, flat cathodes, one of which is wire-gauze cathode, and magnetic system. Common anode is made as cylindrical toroid. Rod cathodes are deepened into toroid hollow to half their length on the side of external cylinder. Internal cylinder of toroid is provided with circular slot. It forms cavity together with flat face cathodes. On external cylinder periphery rod cathodes are interconnected by magnets, and consequently, they form magnetic circuit with longitudinal magnetic field in toroid hollow. EFFECT: efficient thermal treatment. 1 dwg
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