Wei Huigang, Wang Shaojun, Yuan Da-Wei, Cui Ye, Yang Xiaohu, Ma Yanyun, Zhang Zhe, Yuan Xiaohui, Zhong Jiayong, Hua Neng, Li Yutong, Zhu Jianqiang, Zhao Gang, Zhang Jie
Author Affiliations
National Astronomical ObservatoriesBeijing National Laboratory of Condensed Matter PhysicsNational Astronomical Observatories Chinese Academy of SciencesNational University of Defense TechnologyNational University of Defense Technology Department of PhysicsInstitute of Physics Chinese Academy of SciencesKey Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, Shanghai Jiao Tong UniverisityBeijing Normal UniversityShanghai Institute of Optics and Fine MechanicsInstitute of Physics, The Chinese Academy of SciencesShanghai Jiao Tong Universityshow less
Abstract
Double cone ignition (DCI) [Zhang et al., Phil. Trans. R. Soc. A 378: 20200015 (2020)] was proposed recently as a novel path for direct-drive inertial confinement fusion (ICF) using high power lasers. In this scheme, plasma jets with both high density and high velocity are required for collisions. Here we report preliminary experimental results obtained at the Shenguang-II upgrade laser facility, employing a CHCl shell in a gold cone irradiated with a two-ramp laser pulse. The CHCl shell was pre-compressed by the first laser ramp to a density of 3.75 g/cm3 along the isentropic path. Subsequently, the target was further compressed and accelerated by the second laser ramp in the cone. According to the simulations, the plasma jet reached a density of up to 15 g/cm3, while measurements indicated a velocity of 126.8 ± 17.1 km/s. The good agreements between experimental data and simulations are documented.
