High Power Laser and Particle Beams, Volume. 34, Issue 12, 122002(2022)

Analyzing implosion symmetry based on fringe shifts of wide-angle velocity interferometer system for any reflector

Yuji Wu1, Qing Zhang1, Feng Wang2、*, and Yulong Li2
Author Affiliations
  • 1School of Nuclear Engineering, Rocket Force University of Engineering, Xi’an 710025, China
  • 2Laser Fusion Research Center, CAEP, P. O. Box 919-988, Mianyang 621900, China
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    A recording design of wide-angle velocity interferometer system for any reflector (VISAR) fringe that loading shaped optical fiber panel or ring-to-line fiber bundle in front of the streak camera is presented, and the coordinates of recording position are located at a certain circle on pellet. To realize implosion symmetry analysis, the phase of wide-angle VISAR fringes is obtained by using coordinate transformation, Fourier transformation and Legendre expansion, and its feasibility is verified by examples. The diagnostic characteristics, optical design, equipment development and data processing of the method are discussed, and the development direction of implosion symmetry diagnosis based on wide-angle VISAR is introduced. Using this method to record and analyze the wide-angle VISAR fringe data can make implosion symmetry diagnosis accurate, intuitive and vivid, and can provide support for studying laser plasma instability and fluid instability in inertial confinement fusion research.

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    Yuji Wu, Qing Zhang, Feng Wang, Yulong Li. Analyzing implosion symmetry based on fringe shifts of wide-angle velocity interferometer system for any reflector[J]. High Power Laser and Particle Beams, 2022, 34(12): 122002

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    Paper Information

    Category: Inertial Confinement Fusion Physics and Technology

    Received: Aug. 3, 2022

    Accepted: --

    Published Online: Nov. 10, 2022

    The Author Email: Wang Feng (lfrc_wangfeng@163.com)

    DOI:10.11884/HPLPB202234.220238

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