Fluxes of Charged Particles From Plasma of Nanosecond Vacuum Spark

Fluxes of ions and electrons from plasma of a nanosecond high-voltage vacuum spark have been studied. Differences in the determination of the plasma expansion velocities by the probe method, the method of recording the flux of particles, and the Thomson spectrometer have been established. It has been shown that the spectrum of explosive emission electrons includes a high-energy part with energies higher than the discharge voltage. It has been assumed that the plasma stream contains high-energy electrons formed by intensive plasma oscillations.