Research on a wide-angle diagnostic method for shock wave velocity at SG-III prototype facility

Nuclear Fushion

article

Y.J. Wu¹  F. Wang¹  Y.L. Li¹  Q.P. Wang³  S.E. Jiang¹ 

[1] Laser Fusion Research Center, Chinese Academy of Engineering Physics;School of Physical Sciences, University of Science and Technology of China;National Synchrotron Radiation Laboratory, University of Science and Technology of China

关键词: shock wave measurement;    implosion compression;    optical design;    velocimetry;    inertial confinement fusion;   

DOI  :  10.1088/1741-4326/aabeed

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

A wide-angle diagnostic method for shock wave velocity is proposed in this paper. An ellipsoidal equation deduced for wide-angle diagnosis by using geometrical optical laws is presented. The combination of an ellipsoidal mirror and a traditional velocity interferometer system for any reflector (VISAR) forms a wide-angle VISAR. Several fundamental problems such as assembly, imaging, and interference in the wide-angle VISAR are discussed. The method is proven to be feasible based on the results of an eight-beam laser direct drive experiment at SG-III prototype facility. The diagnostic method is expected to be usable in a wide variety of experiments, especially those related to implosion compression, including high-pressure equation of state experiments, materials characterization experiments, shock characterization for Rayleigh–Taylor experiments, and shock timing experiments for inertial confinement fusion research.

【 授权许可】

Unknown