Integrated simulation of magnetic-field-assist fast ignition laser fusion
Integrated simulation of magnetic-field-assist fast ignition laser fusion
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DOI：
10.1088/0741-3335/59/1/014045
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发表时间：
2017-01-01
影响因子：
2.2
通讯作者：
Azechi, H.
中科院分区：
文献类型：
--
作者：
Johzaki, T.;Nagatomo, H.;Azechi, H.
为了提高快点火激光聚变堆芯的加热效率，通过对FIREX类靶的综合模拟，对外磁场引导相对论电子束的概念进行了评估。对于锥壳靶的情况下，核心加热性能恶化，通过施加磁场，因为核心是相当大的变形和大部分的快速电子被反射，由于磁镜通过内爆形成。另一方面，在锥形固体球靶的情况下，内爆在千特斯拉级磁场下更稳定。此外，通过内爆形成了可行的磁场位形。因此，磁芯加热效率通过磁引导而加倍。研究了实心球靶的堆芯加热特性与加热脉冲发射定时的关系。
To enhance the core heating efficiency in fast ignition laser fusion, the concept of relativistic electron beam guiding by external magnetic fields was evaluated by integrated simulations for FIREX class targets. For the cone-attached shell target case, the core heating performance deteriorates by applying magnetic fields since the core is considerably deformed and most of the fast electrons are reflected due to the magnetic mirror formed through the implosion. On the other hand, in the case of a cone-attached solid ball target, the implosion is more stable under the kilo-tesla-class magnetic field. In addition, feasible magnetic field configuration is formed through the implosion. As a result, the core heating efficiency doubles by magnetic guiding. The dependence of core heating properties on the heating pulse shot timing was also investigated for the solid ball target.