Macroparticle filtering of high-current vacuum arc plasmas
- Fraunhofer-Inst. for Materials Physics and Surface Engineering, Dresden (Germany)
- Lawrence Berkeley National Lab., CA (United States)
The transport of vacuum arc plasmas through a 90{degrees} curved magnetic macroparticle filter was investigated using a high-current pulsed arc source with a carbon cathode. The peak arc current was in the range of a few kA, exceeding considerably the level of what has been reported in literature. The main question investigated was whether magnetic macroparticle filters could be scaled-up and simultaneously maintaining the transport efficiency of small filters. In front of the cathode the authors found arc-current-depending total ion saturation currents in the range from 10 to 23% of the arc current. The best transport efficiency was 25% (time integrated output / time integrated input) at a duct wall bias of 12.5 V and at an axial magnetic field of about 100 mT. This is comparable to what has been observed with other, low-current filters.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 441561
- Report Number(s):
- CONF-960723-; TRN: 96:006574-0034
- Resource Relation:
- Conference: 17. international symposium on discharges and electrical insulation in vacuum, Berkeley, CA (United States), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of XVIIth international symposium on discharges and electrical insulation in vacuum. Volume 1 and 2; PB: 1139 p.
- Country of Publication:
- United States
- Language:
- English
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