Open AccessThe measurements of vacuum arc behaviour at threshold current
Author(s) -
I. L. Muzyukin,
П. С. Михайлов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2064/1/012015
Subject(s) - vacuum arc , current (fluid) , cathode , arc (geometry) , peak current , materials science , ion current , ion , atomic physics , analytical chemistry (journal) , chemistry , electrode , physics , thermodynamics , electrochemistry , geometry , mathematics , organic chemistry , chromatography
The measurements of vacuum arc current parameters at the threshold current were made. The threshold currents for Cu, W, graphite cathodes were measured. It was shown that the current that vacuum arc chops with, has a statistical distribution. The vacuum arc current chopping is accompanied with significant ion current burst. The ion current of W and Cu cathodes contains intensive peaks with 30-50 ns duration. It was shown that the cathode materials that have intense peaks have a significant threshold current.