Special fitures of expansion and heating of current-carrying plasma in the vacuum arc discharges of different type
I. A. Krinberg
Irkutsk State University, Irkutsk, Russia
Motion and heating of plasma emitted from cathode spots of the vacuum arc discharge has been studied by means of analytical solution of magneto- hydrodynamic equations. As is shown three characteristic modes of current-carrying plasma expansion into the vacuum ambient may be distinguished: a free quasi-spherical expansion with a cooling (the conical jet), a magnetically confined isothermal flow (the parabolic jet), an essentially heated flow along an external magnetic field (the cylindrical jet).
Contents