Abstract
The results of processes above the surface of graphite samples which exposed with powerful vacuum ultraviolet (VUV) radiation experimental studies are presented. The characteristic radiation exposure time was 3...100 μs, the radiation energy in the vacuum region of the spectrum was 1...2 kJ. The main characteristics of the processes were recorded on direct, shadow photographs and interferograms. The temporal dynamics of the expansion of the plasma layer formed during evaporation of the flat graphite targets surface by VUV radiation, as well as the dynamics of buffer gas compression and shock wave motion are analyzed. It is shown that the temperature of the carbon plasma above the samples surface reached 1 eV. Research is relevant in the fields of space, plasma technologies, the development of the element base of microelectronics and fundamental studies of the powerful radiation interaction with matter.
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