Relativistic plasma and electron bunches in plasma synchrotrons of GYRAC

A review of experimental research performed on installations of GYRAC-type based on the synchrotron gyromagnetic autoresonance (SGA) phenomenon is presented. It is shown that the SGA-regime can be used to obtain relativistic plasma as well as a controlled bunch of relativistic electrons. GYRAC-produced plasma is of interest for applied plasma physics as a source of particles and different kinds of radiation (synchrotron radiation and bremsstrahlung).