INVESTIGATION OF SPATIAL CHARACTERISTICS OF X-RAY EMISSION ON HOHLRAUM TARGETS

The principle and method of x-ray spatial imaging are described and the spatial image of x-ray on the hohlraum targets are given out. MCP (microchannel plates) photoelectric imaging device is used for ICF experiment in our country, for the first time. The problem of hard x-ray background is solved in the experiment, in addition to the extent of subkilovolt energy range. The experiment shows that there is plasma "concentrating centre" phenomenon in the entrance hole and within cavity of the hohlraum target and that x-ray emission is predominant on the hohlraum target wall. Findlly, measurement results are discussed.