Plasma Studies on Ion Diodes.
Abstract
Cathode plasmas in pulsed high current vacuum diodes have been studied using optical interferometry and spectroscopy. Both aluminum and graphite cathodes were used and the diode current density was varied over a factor of ten. The cathode plasma inventory was seen to increase during the length of the pulse and the plasma density was seen to increase with increasing current density. Spectral line emission from H, CI, CII, and CIII was observed when either cathode was used. It is concluded that cathode was used. it is concluded that cathode plasma expansion is dominated by protons from cathode surface contaminants. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 05, 1983
- Accession Number
- ADA142183
Entities
People
- G. Bekefi
Organizations
- Massachusetts Institute of Technology