Simulation of heating-compressed fast-ignition cores by petawatt laser-generated electrons.
Simulation of heating-compressed fast-ignition cores by petawatt laser-generated electrons.
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DOI：
10.1103/physrevlett.94.055001
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发表时间：
2005-02
影响因子：
8.6
通讯作者：
R. Campbell;R. Kodama;T. Mehlhorn;K. Tanaka;D. Welch
中科院分区：
文献类型：
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作者：
R. Campbell;R. Kodama;T. Mehlhorn;K. Tanaka;D. Welch
我们报告独特的粒子模拟，以了解相对论性电子束热化和随后的加热高度压缩等离子体。给出了激光-电子耦合效率和激光产生电子分布函数的合理假设，模拟得到的加热堆芯参数与GEKKO-PW的实验测量结果吻合较好。热电子的经典范围超过质量密度核心直径产品rhoL的几个因素。异常停止似乎是存在的，并创建的增长和饱和的电磁感应模式，产生一个强大的反电动势阻碍热电子的注入侧的密度最大值。
We report on unique particle-in-cell simulations to understand the relativistic electron beam thermalization and subsequent heating of highly compressed plasmas. The simulations yield heated core parameters in good agreement with the GEKKO-PW experimental measurements, given reasonable assumptions of laser-to-electron coupling efficiency and the distribution function of laser-produced electrons. The classical range of the hot electrons exceeds the mass density-core diameter product rhoL by a factor of several. Anomalous stopping appears to be present and is created by the growth and saturation of an electromagnetic filamentation mode that generates a strong back-EMF impeding hot electrons on the injection side of the density maxima.