THE EXPANSION OF PLASMA FROM CATHODE SPOTS IN LOW-CURRENT VACUUM ARC
 
PAWEŁ IDZIAK, JERZY JANISZEWSKI
   
Abstract:
The article presents the model of a plasma expansion in the electrode gap of vacuum interrupters. This model consists of two areas. The first one has a big scattering angle and exists near the ionization region. The second one (a truncated cone) has a smaller scattering angle than the first one. It is situated upper the ionization region. The analyses show that this model gives results similar to the experimental researches.
   
Key Words: cathode spot, arc, vacuum arc, plasma expansion
   
 
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