Fast ignition integrated experiments and high-gain point design
Fast ignition integrated experiments and high-gain point design
复制标题
DOI：
10.1088/0029-5515/54/5/054005
复制
发表时间：
2014-04
期刊：
影响因子：
3.3
通讯作者：
H. Shiraga;H. Nagatomo;W. Theobald;A. A. Solodov-A.;M. Tabak
中科院分区：
文献类型：
--
作者：
H. Shiraga;H. Nagatomo;W. Theobald;A. A. Solodov-A.;M. Tabak
综合快速点火实验在ILE，大坂，和LLE，罗切斯特，其中纳秒驱动器激光器内爆氘塑料壳在前面的空心金属锥的尖端和强烈的超短脉冲激光注入通过锥加热压缩等离子体。基于对锥壳靶的快速电子加热的初步成功结果，建造了大能量短脉冲激光束线并投入使用：罗切斯特的OMEGA-EP和大坂的LFEX。在大坂和罗切斯特的综合实验中，已经证实了用10 kJ短脉冲激光加热引起的中子增强。通过将实验结果与模拟结果进行比较，对中子产额进行了分析。内爆燃料等离子体中的快速电子束输运和电子能量沉积的细节是复杂的，需要进一步的研究。研究了内爆的流体动力学，包括内爆等离子体与锥尖的相互作用。对快速点火点设计的高增益靶的流体动力学进行了理论和仿真研究。
Integrated fast ignition experiments were performed at ILE, Osaka, and LLE, Rochester, in which a nanosecond driver laser implodes a deuterated plastic shell in front of the tip of a hollow metal cone and an intense ultrashort-pulse laser is injected through the cone to heat the compressed plasma. Based on the initial successful results of fast electron heating of cone-in-shell targets, large-energy short-pulse laser beam lines were constructed and became operational: OMEGA-EP at Rochester and LFEX at Osaka. Neutron enhancement due to heating with a ∼kJ short-pulse laser has been demonstrated in the integrated experiments at Osaka and Rochester. The neutron yields are being analysed by comparing the experimental results with simulations. Details of the fast electron beam transport and the electron energy deposition in the imploded fuel plasma are complicated and further studies are imperative. The hydrodynamics of the implosion was studied including the interaction of the imploded core plasma with the cone tip. Theory and simulation studies are presented on the hydrodynamics of a high-gain target for a fast ignition point design.