A time-resolved three-channel soft X-ray spectrometer

Developing of a time-resolved three-channel soft X-ray spectrometer is reported, and the operating principle and the parameters of spectrometer designed in three energy bands of 210 eV, 420 eV and 900 eV are presented specially. On the ShenGuang-II high power laser facility, the spectrometer was applied in experiments with good results. This work is the first attempt in China to construct a spectrometer which couples planar mirrors and filters to X-ray streaked camera, and which is capable of measuring X-ray signal with spatial- and temporal-resolution in three sub-keV energy channels simultaneously. Experimental results show that by combining X-ray reflector and filter, the spectrometer has achieved energy resolution of 5 and temporal resolution ability of 10 ps. (authors)