Electrode Conditions and Their Effect on Impedance Collapse
Abstract
Changes in electrode conditions affect impedance collapse, seen in our 300 kV diode as a rapid increase in current beyond the 1 kA space charge limit. Impedance collapse comes about 100 ns later than the usual 200 ns when the diode's tantalum anode is hot (600 - 1000 K). Covering the carbon fiber ring cathode with cesium iodide delays collapse by another 100 ns. These observations might come from pre-shot removal of loosely bound adsorbates off the anode by heating, and easing electrode emission from the cathode from more but smaller, less violent explosive emission spots. We suggest modifications that implement these areas in DECADE.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 02, 1998
- Accession Number
- ADA373971
Entities
People
- N R Pereira