Abstract
This paper deals with the computer simulation of a vacuum arc with composite cathode under action of external axial magnetic using hybrid model. The described hybrid model treats the electrons as a massless fluid and ions as macroparticles. It is shown that the average charge state of ions in a jet of a vacuum arc increases with increasing magnetic field. The calculation results are consistent with experimental data.
Highlights
High-current vacuum arcs (HCVA) arising in vacuum interrupters with an axial magnetic field (AMF) can operate in different modes [1, 2]
When AMF is higher than about of 10 mT kA-1, HCVA exhibits a multiple arc mode. In this mode HCVA looks like a lot of low current vacuum arcs (LCVA) working in parallel
It is of great practical interest to study the characteristics of a single spot with the corresponding plasma jet in a strong AMF as part of the HCVA in vacuum interrupters
Summary
High-current vacuum arcs (HCVA) arising in vacuum interrupters with an axial magnetic field (AMF) can operate in different modes [1, 2]. This paper deals with the computer simulation of a vacuum arc with composite cathode under action of external axial magnetic using hybrid model. It is shown that the average charge state of ions in a jet of a vacuum arc increases with increasing magnetic field.
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