Laser-imploded core structure observed by using two-dimensional x-ray imaging with 10-ps temporal resolution

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Abstract
Core plasmas of laser‐imploded ICF targets were observed by using a 10‐ps temporally resolved two‐dimensional x‐ray imaging technique. A multi‐imaging x‐ray pinhole camera was coupled to an x‐ray streak camera, and two‐dimensional images were reconstructed by handling the streaked image data. Image distortion of the system was evaluated and nonuniformity in sensitivity was corrected. The spatial resolution was 15 μm and the observed photon energy was 2.2–4.9 keV. Structures in the x‐ray image of the core were found to be rapidly changing with 10‐ps time scale.