Heat transfer to a thermally isolated graphite anode in a long duration vacuum arc was investigated. Anode bulk temperatures were measured as a function of time using two high temperature thermocouples. The anode surface temperature was optically determined. Surface temperatures of 2300 K were obtained in a 340 A arc. A one dimensional non-linear heat flow model for the anode was developed. A solution was obtained using a dynamic numerical method and the effective anode potential was determined to be approximately 6 V.
|Number of pages||6|
|Journal||Proceedings of SPIE - The International Society for Optical Engineering|
|State||Published - 1 May 1994|
|Event||16th International Symposium on Discharges and Electrical Insulation in Vacuum 1994 - Moscow-St. Petersburg, Russian Federation|
Duration: 23 May 1994 → 30 May 1994