Critical Point Parameters and Cathode Spot Cells in Vacuum Arcs

This paper presents a model for the estimation of specific parameters of vacuum arc cathode spot (CS) explosive cells. It involves the reactive force accelerating ions from the spot cell, what is known as the Tanberg effect, and the assumption that the average state of matter during the explosion is...

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Bibliographic Details
Published inIEEE transactions on plasma science Vol. 43; no. 9; pp. 3320 - 3322
Main Authors Mesyats, Gennady A., Tsventoukh, Mikhail M.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Cathodes
Copper
Current density
Ecton model
Electron emission
Electron tubes
explosive electron emission
Ions
Mathematical models
Parameter estimation
Plasmas
vacuum arc
Vacuum arcs
vacuum discharge
Velocity
vacuum discharge
Ecton model
vacuum arc
explosive electron emission
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Summary:This paper presents a model for the estimation of specific parameters of vacuum arc cathode spot (CS) explosive cells. It involves the reactive force accelerating ions from the spot cell, what is known as the Tanberg effect, and the assumption that the average state of matter during the explosion is near the liquid-gas (plasma) critical point. Specifying the ions' velocity and erosion rate known from measurements, and the critical pressure, one can estimate the average current density at the CS cell to be about 100 MA/cm 2 for most of the materials considered.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2015.2466173