Method and device for treatment of products in gas-discharge plasma

摘要

PCT No. PCT/RU92/00088 Sec. 371 Date Dec. 13, 1993 Sec. 102(e) Date Dec. 13, 1993 PCT Filed Apr. 23, 1992 PCT Pub. No. WO92/19785 PCT Pub. Date Nov. 12, 1992.A method for treatment of products in gas-discharge plasma consists in that a two-step vacuum-arc discharge is initiated between an anode (3) and an integrally cold cathode (2), featuring a metal-gaseous step of plasma and a gaseous step of plasma. The gaseous step of plasma is established by ionizing the working gas with electrons separated from the metal-gaseous step of plasma. Then a product (5) under treatment is preheated to working temperature and held in a preset temperature range. To this end, provision is made in the device for a means (13) for electron separation from the metal-gaseous step of plasma, which means is situated in the zone of the integrally cold cathode (2) and is impermeable to the metal ions generated by the cathode (2). In a particular case the means (13) is made as a set of V-shaped plates (14).