On the paper “on the formation of nanosecond volume discharges, subnanosecond runaway electron beams, and x-ray radiation in gases at elevated pressure” by V. F. Tarasenko and I. D. Kostyrya (Izv. Vyssh. Uchebn. Zaved., Fiz., No. 12, 2005)

摘要

Investigations of the discharges in dense gases that develop in the mode of generation of runaway electrons (RE) are undoubtedly of scientific and practical interest. The production of an RE current of more than 100 A at pressures P 1 atm declared by V. F. Tarasenko and co-workers (Institute of High Current Electronics, SD, RAS) would be a major breakthrough. It is possible that they actually managed to extract such an RE current beyond the anode (АlBe foil of thickness 45 μm), but in VNIIEF experiments performed in the same modes but at higher voltages, only electrons of anomalous energy (EAE) were detected whose current downstream of an aluminum anode of thickness 8 μm was not over some fractions of an ampere [1–3]. EAE are the electrons with energy ε > eUmax, where Umax is the maximum pulse voltage during the discharge.