Introductory spectroscopic studies of the cathode zone of high-pressure arc discharge

Details Introductory spectroscopic studies of the cathode zone of high-pressure arc discharge Introductory spectroscopic studies of the cathode zone of high-pressure arc discharge

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977issc.rept.....w&link_type=abstract

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Physics

Arc Discharges, Cathodes, Electric Field Strength, Plasmas (Physics), Spectroscopy, Electron Density (Concentration), Mercury Vapor, Plasma Diagnostics, Stark Effect

Scientific paper

Processes occuring in the solid cathode, in the cathode plasma, and on the boundary between these two media were considered in modeling the cathode zone of an arc discharge. Theoretical and experimental works concerning cathode spots are reviewed and introductory spectroscopic studies of the cathode zone of high-pressure arc discharge in mercury vapors are described. A method of determining the intensity of the electric field in the spot utilizing the Stark effect is proposed. Preliminary measurements did not reveal the effect, probably as a result of the inadequate spatial separating ability of the apparatus used. On the basis of the results (significant widening of the visual lines), the density of electron concentration in the plasma of a cathode spot was confirmed.

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