Computational study of magnetic field compression by laser-driven implosion
Computational study of magnetic field compression by laser-driven implosion
复制标题
激光驱动内爆磁场压缩的计算研究
DOI：
10.1088/0029-5515/55/9/093028
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发表时间：
2015
期刊：
影响因子：
3.3
通讯作者：
H
中科院分区：
文献类型：
--
作者：
Nagatomo;H; Johzaki;T; Asahina;T; Sunahara;A; Sano;T; Sakagami;H; Mima;K; Fujioka;S; Shiraga;H; Azechi;H
利用二维电阻性磁辐射流体动力学模拟程序研究了激光驱动内爆对外磁场的压缩。模拟结果表明，将磁场压缩到1 kT（10 7G）是可能的，但强磁场会抑制穿过强磁力线的电子热通量，从而影响内爆动力学.这一结果表明，必须采取谨慎的设计与外磁场快速点火的目标和初始条件，不仅要控制热电子传输，而且要形成高密度等离子体。
The compression of an external magnetic field by a laser-driven implosion is studied by using the two-dimensional resistive magneto-radiation hydrodynamic simulation code for electron-beam guiding in fast ignition. The simulation results show that it is possible to compress the magnetic field to 1 kT (10 7 G); however, the strong magnetic field affects the implosion dynamics because of the suppression of the electron heat flux that crosses the strong magnetic field lines. This result suggests that care must be taken to design a target and the initial conditions for fast ignition with an external magnetic field not only to control the hot electron transport but also to form the high-density plasma.