论文标题
快速电子对直接驱动激光融合靶的增益的影响
Effect of fast electrons on the gain of a direct-drive laser fusion target
论文作者
论文摘要
提出了直接驱动惯性限制融合（ICF）目标的数值和理论研究结果，其中包括激光加速快速电子的能量传递的动力学描述。基于国家点火设施（NIF）的最新实验的结果，选择了快速电子的初始温度和所包含的激光能量的范围。这是由于从崩溃的目标的消融表面的快速电子产生区域的偏差。结果，很大一部分颗粒不会落入目标的压缩部分。 “徘徊”效应导致降低快速电子生成对目标增益的负面影响。
The results of numerical and theoretical studies of the gain of direct-drive inertial confinement fusion (ICF) target, which includes a kinetic description of energy transfer by laser-accelerated fast electrons, are presented. The range of initial temperature of fast electrons and fraction of laser energy contained in these particles were chosen based on the results of recent experiments at the National Ignition Facility (NIF).The effect of 'wandering' of fast electrons is taken into account. It is due to a remoteness of the region of fast electron generation from the ablation surface of imploded target. As a result a significant fraction of particles do not fall into the compressed part of target. The `wandering' effect leads to decreasing the negative effect of fast electron generation on the target's gain.
