Diagnostic technique for measuring fusion reaction rate for inertial confinement fusion experiments at Shen Guang-III prototype laser facility
Wang Feng (王峰)a, Peng Xiao-Shi (彭晓世)a, Kang Dong-Guo (康洞国)b, Liu Shen-Ye (刘慎业)a, Xu Tao (徐涛)a
a Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang 621900, China; b Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
Abstract A study is conducted using a two-dimensional simulation program (Lared-s) with the goal of developing a technique to evaluate the effect of Rayleigh–Taylor growth in a neutron fusion reaction region. Two peaks of fusion reaction rate are simulated by using a two-dimensional simulation program (Lared-s) and confirmed by the experimental results. A neutron temporal diagnostic (NTD) system is developed with a high temporal resolution of ～ 30 ps at the Shen Guang-III (SG-III) prototype laser facility in China, to measure the fusion reaction rate history. With the shape of neutron reaction rate curve and the spherical harmonic function in this paper, the degree of Rayleigh–Taylor growth and the main source of the neutron yield in our experiment can be estimated qualitatively. This technique, including the diagnostic system and the simulation program, may provide important information for obtaining a higher neutron yield in implosion experiments of inertial confinement fusion.
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10805041), the Science and Technology on Plasma Physics Laboratory, China (Grant No. 9140C6801021001), and the Science and Technology Development Foundation of China Academy of Engineering Physics, China (Grant No. 2011B0102020).
Corresponding Authors:
Wang Feng
E-mail: xiaozei7566@163.com
Cite this article:
Wang Feng (王峰), Peng Xiao-Shi (彭晓世), Kang Dong-Guo (康洞国), Liu Shen-Ye (刘慎业), Xu Tao (徐涛) Diagnostic technique for measuring fusion reaction rate for inertial confinement fusion experiments at Shen Guang-III prototype laser facility 2013 Chin. Phys. B 22 115204
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