Source of metal ions with a variable velocity

Results of the time-of-flight measurements of the cathode plasma jet velocity in a low voltage vacuum spark are presented. It is found that the mean velocity of plasma jet is variable at a wide range of values. When the discharge current is enhanced from 0.6 kA up to 11 kA, the velocity of plasma je...

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Bibliographic Details
Main Authors: Gorbunov, S.P., Krasov, V.P., Krinberg, I.A., Paperny, V.L.
Format: Conference Proceeding
Language:English
Subjects:
Anodes
Capacitors
Cathodes
Current measurement
Delay
Plasma measurements
Plasma sources
Sparks
Vacuum arcs
Velocity measurement
Online Access:Request full text
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Summary:Results of the time-of-flight measurements of the cathode plasma jet velocity in a low voltage vacuum spark are presented. It is found that the mean velocity of plasma jet is variable at a wide range of values. When the discharge current is enhanced from 0.6 kA up to 11 kA, the velocity of plasma jet at a distance of 35 cm from the copper cathode is risen linear from 2-10/sup 6/ cm/s up to 7-10/sup 6/ cm/s, i.e. near six times exceeds the corresponding value for DC arc. A simple hydrodynamic model is presented, which explains the experimental results with a satisfactory accuracy.
DOI:10.1109/ISDEIV.2002.1027463