The behavior of vacuum arc discharges on hydrogen impregnated electrodes

This paper reports on experimental studies of the behavior of vacuum arcs at hydrogen impregnated electrodes. The arc discharges were analyzed by high speed photography, open shutter photography, measurement of arc voltage and current, and measurements of the erosion in dependence on the level of im...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on plasma science 1999-08, Vol.27 (4), p.894-900
Main Authors: Logatchev, A.A., Afanas'ev, V.P., Shkol'nik, S.M., Juttner, B., Pursch, H.
Format: Article
Language:English
Subjects:
Arc discharges
Cathodes
Current measurement
Droplets
Electric arcs
Electric potential
Electrodes
Erosion rate
Hydrogen
Impregnation
Nuclear physics
Photography
Titanium
Vacuum arcs
Velocity measurement
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper reports on experimental studies of the behavior of vacuum arcs at hydrogen impregnated electrodes. The arc discharges were analyzed by high speed photography, open shutter photography, measurement of arc voltage and current, and measurements of the erosion in dependence on the level of impregnation for a wide range of arc currents. The results show that impregnation of electrodes with hydrogen reduces the erosion rate, causes smaller crater dimensions, changes the macroparticle size, and decreases the current per spot. For a given current the arc voltage depends on the degree of impregnation. At low current it decreases with increasing impregnation. Furthermore, the arc discharge burns more stable on impregnated electrodes. The total erosion rate decreases significantly due to the reduction of the droplet fraction. The spot movement is faster than on nonimpregnated electrodes.
ISSN:0093-3813
1939-9375
DOI:10.1109/27.782256