407 / 2019-02-28 19:39:31

Characterization of a high energy x-ray source produced by the SG-II-U laser facility

picosencd laser;wire target; x ray

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High energy and short pulse x-ray sources produced by petawatt laser are widely used to diagnose and image in the internal confinement fusion (ICF) and high energy density physics experiments. In the ICF implosion experiments, the area density and symmetry of the fuel capsule near peak compression can be determined using the Compton radiography, which obtains high energy x-ray point-projection radiography with high spatial and temporal resolution of ~10 um and ~10 ps, respectively. To create a suitable x-ray source for Compton radiography, metal wire target were irradiated with short pulse petawatt laser in SG-II-U laser facility. In this paper, we describe the experiment to develop the source and characteristics of the x ray source include spectrum, conversion efficiency and x-ray spot.