Radiation of a short high-current vacuum arc in the vacuum ultraviolet

In the vacuum ultraviolet, the radiation intensity of a high-current vacuum arc was measured in the spectral region of 100 nm $\le\lambda\le$ 1100 nm. The results obtained made it possible to analyze the dependence of the radiation power on the arc current in different wavelength ranges, including in the field of vacuum ultraviolet. The analysis showed that in a developed vacuum arc with anodic activity, there is a redistribution of radiation power in the studied spectral regions. The measurement results made it possible to calculate how much of the power released in the arc is transferred by radiation.