Research progress of kinetic effects in laser inertial confinement fusion
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摘要: 动理学效应的研究是近年来激光惯性约束聚变领域的研究热点，有助于理解实验结果和传统流体模拟之间的偏差。间接驱动黑腔中等离子体的温度、密度跨越多个量级且靶丸组分复杂，在局域的高温低密度区域，粒子的非平衡效应开始变得显著，可能会间接影响内爆性能。对ICF领域动理学效应的概念和部分进展做了简要综述。Abstract: In recent years, the study of kinetic effects is a hot issue in the field of laser inertial confinement fusion, which helps to understand the deviation between experimental results and traditional fluid simulation. The temperature and density of the plasma in indirect-drive hohlraum span multiple orders of magnitude, and the composition of capsule is complex. In the local high temperature and low density region, the thermal non-equilibrium effect of particles becomes significant, which may indirectly affect the implosion performance. In this paper, the concept and some progress of kinetic effects in the ICF field are briefly reviewed.
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Key words:
- laser fusion /
- kinetic effect /
- thermal non-equilibrium
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图 1 NIF170601发次对应模拟的黑腔等离子体不同区域温度、密度演化曲线（实线），及归一化离子碰撞平均自由程等高线（虚线）。（□）峰值激光功率时刻，（○）冲击波回弹时刻，（×）峰值燃烧时刻[15]
Figure 1. Physical regime of density and temperature in the simulation of NIF shot N170601 (solid lines). Contours show normalized ion mean-free-path (dashed lines). Symbols indicate time of (□) peak laser power，(○) shock rebound，and (×) peak burn[15]
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