High-current cathodes of high-pressure plasmatrons
Abstract
The performance of rod-shaped tungsten cathodes in helium and nitrogen atmospheres is investigated experimentally. In a nitrogen atmosphere at pressures above 0.5 MPa, the rod cathodes fail at currents higher than 500 A. In helium, similar cathodes operate stably at a current of 1.5 kA and pressures up to 2 MPa. Zirconium cathodes with a conical insert operate stably at currents up to 2 kA and pressures up to 2 MPa.
- Publication:
-
Akademiia Nauk SSSR Sibirskoe Otdelenie Izvestiia Seriia Tekhnicheskie Nauki
- Pub Date:
- June 1988
- Bibcode:
- 1988SiSSR.......53V
- Keywords:
-
- Cold Cathodes;
- Electrode Materials;
- Hot Cathodes;
- Plasma Currents;
- Plasma Electrodes;
- Plasmatrons;
- High Current;
- High Pressure;
- Molecular Gases;
- Nitrogen;
- Rare Gases;
- Plasma Physics