Two-dimensional time- and space-resolved diagnostic method for an integrated implosion process

Shijian Li

doi:10.1364/OE.439133

Two-dimensional time- and space-resolved diagnostic method for an integrated implosion process

2021-09-29

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DOI：10.1364/OE.439133

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To precisely measure and evaluate X-ray generation and evolution in a hohiraum during an implosion process, we present a two-dimensional (2D) time- and space-resolved diagnostic method by combining a compressed ultrafast photography (CUP) system and a simplified version of space-resolving flux detector (SSRFD). Numerical experiment results showed that the reconstruction quality of the conventional CUP significantly improved owing to the addition of the external SSRFD, especially when a coded mask with a large pixel size was used in the CUP. Further, the performance of the CUP cooperation with the SSRFD was better than that of adding an external charge-coupled device or streak camera. Compared with existing ultrafast imaging techniques in laser fusion, the proposed method has a prominent advantage of measuring the 2D evolution of implosion by combining high temporal resolution of streak camera and high spatial resolution of SSRFD; moreover, it can provide guidance for designing diagnostic experiments in laser fusion research. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Keyword:

COMPRESSED ULTRAFAST PHOTOGRAPHY

RAY STREAK CAMERA

IMAGE

RECONSTRUCTION

ALGORITHMS

Two-dimensional time- and space-resolved diagnostic method for an integrated implosion process

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