Study of Plasma on the GOL-3 Facility by Imaging VUV Spectroscopy

The series of experiments on plasma heating by the electron beam of reduced diameter was carried out at the GOL-3 facility. To define the size of a high-temperature plasma region the imaging VUV spectrometer was used in these experiments. In the paper the description of the diagnostic system, the results of measurements, the comparison with simulation data of the ionization balance are presented. Estimations of transverse diffusion and macroscopic movements of the beam are discussed.