标题： 提高高绝热指数惯性约束聚变压缩中的热点压力以实现点火 显示英文标题

标题： Improving hot-spot pressure for ignition in high-adiabat Inertial Confinement Fusion implosion

摘要： 一种新的胶囊目标设计被提出，以提高惯性约束聚变高绝热压缩中的热点压力，其中使用一层相对高密度材料作为燃料和烧蚀层之间的推动层。 该设计基于我们对停滞标度定律的理论发现，这表明通过增加壳层的动能密度 $\rho_d V_{imp}^2/2$ （$\rho_d$是当壳层速度达到最大值时的壳层密度，$V_{imp}$是压缩速度）可以提高热点压力。 所提出的设计利用高密度推动层来增强壳层密度 $\rho_d$，从而提高热点压力。 无线电流体动力学模拟显示，即使由非常高的绝热短时双冲击脉冲驱动，该设计的热点压力也能达到点火要求。 该设计有望同时克服实现点火的两大障碍——烧蚀不稳定性与激光等离子体不稳定性。 显示英文摘要

摘要： A novel capsule target design to improve the hot-spot pressure in the high-adiabat implosion for inertial confinement fusion is proposed, where a layer of comparatively high-density material is used as a pusher between the fuel and the ablator. This design is based on our theoretical finding of the stagnation scaling laws, which indicates that the hot spot pressure can be improved by increasing the kinetic energy density $\rho_d V_{imp}^2/2$ ($\rho_d$ is the shell density when the maximum shell velocity is reached, $V_{imp}$ is the implosion velocity.) of the shell. The proposed design uses the high density pusher to enhance the shell density $\rho_d$ so that the hot spot pressure is improved. Radio-hydrodynamic simulations show that the hot spot pressure of the design reaches the requirement for ignition even driven by a very high-adiabat short-duration two-shock pulse. The design is hopeful to simultaneously overcome the two major obstacles to achieving ignition--ablative instability and laser-plasma instability.