Anode temperature evolution in a vacuum Arc with a blackbody electrode configuration

Isak I. Beilis, Yosef Koulik, Raymond L. Boxman

Research output: Contribution to journalArticlepeer-review

Abstract

The anode in a vacuum arc with a blackbody assembly was measured as a function of time. A 30-mm-diameter Cu cathode and a hollow Ta anode, 50 mm in diameter, were used for a plasma cavity. Cu plasma was ejected through an array of 250 holes of 0.6 mm diameter in the anode. The arc currents were I = 175 , 200, and 225 A and the arc duration was 160 s. The anode temperature was measured using high-temperature thermocouples in the top and side of the anode. The anode temperature increased sharply during a transient time of 70-90 s and then, it slightly increased with time up to 160 s reaching at 1650 K ( I = 175 A) and 1850 K ( I = 225 A) at the top, and 150-200 K less in the side.

Original languageEnglish
Article number7822902
Pages (from-to)2115-2118
Number of pages4
JournalIEEE Transactions on Plasma Science
Volume45
Issue number8
DOIs
StatePublished - Aug 2017

Keywords

  • Anode temperature
  • heat flux
  • thermocouple
  • vacuum arc

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