Title :
Measurement of the temperature of evaporating macroparticles after current zero of vacuum arcs
Author_Institution :
Siemens AG, Erlangen, West Germany
fDate :
8/1/1988 12:00:00 AM
Abstract :
The concentration of copper and chromium vapor after current zero of vacuum arcs between chromium-copper contacts was measured simultaneously by the atomic-absorption technique. Temperatures between 1900 K and 2200 K were derived from the absorption data, assuming that the ratio of concentrations of copper and chromium vapor is equal to the ratio of vapor pressures at a given temperature. The temperatures obtained in this way were assigned to droplets of molten contact material evaporating in flight
Keywords :
arcs (electric); atomic absorption spectroscopy; evaporation; plasma diagnostics; spectral methods of temperature measurement; 1900 to 2200 K; Cr vapour; Cr-Cu contacts; Cu concentration; atomic-absorption; current zero; droplets; evaporating macroparticles; evaporation; flight; molten contact material; temperature; vacuum arcs; Absorption; Atomic measurements; Chromium; Copper; Current measurement; Plasma temperature; Temperature dependence; Temperature measurement; Vacuum arcs; Vacuum technology;
Journal_Title :
Plasma Science, IEEE Transactions on
