论文标题
飞秒激光辐射的纳米式纳米阵列靶标的高能密度等离子体的核反应
High-energy-density plasma in femtosecond-laser-irradiated nanowire array targets for nuclear reactions
论文作者
论文摘要
在这项工作中，高能密度等离子体（HEDP）是根据焦耳级 - 赛车射线激光射线射线阵列（NWA）靶标的进化而来的。粒子中的粒子（PIC）模拟表明，在纳米线表面周围的护套场加速的离子最终局限于NWA等离子体中，最大程度最大，对高能密度做出了最大的贡献。从目标的前表面发出的质子提供了有关相互作用的丰富信息。给出了广泛靶参数范围内的电子和离子能密度。与平面靶标相比，离子能量密度高一个数量级，HEDP的体积大几倍。在最佳目标参数下，激光能量的8％可以转换为限制的质子，并导致离子能密度最高为GJ/cm3水平。来自2H（D，n）3E融合的发射离子和中子的实验测量来自聚乙烯和剥离聚乙烯NWA靶标的实验性测量证实了上述结果。
In this work, the high-energy-density plasmas (HEDP) evolved from joule-class-femtosecond-laser-irradiated nanowire array (NWA) targets are numerically and experimentally studied. The particle-in-cell (PIC) simulations indicate that ions accelerated in the sheath field around the nanowires' surface were eventually confined in NWA plasma, contributing most to the high energy densities. The protons emitted from the front surface of targets provide rich information about the interaction. The electron and ion energy densities in a broad target parameter range are given. Compared to planar targets, the ion energy density is one order of magnitude higher, and the volume of the HEDP is several-fold larger. At optimal target parameters, 8% of the laser energy can be converted to confined protons and results in ion energy densities of up to GJ/cm3 level. Experimental measurements of the emitted ions and neutrons from 2H(d, n)3He fusion from polyethylene and deuterated polyethylene NWA targets confirm the above results.
