Thermonuclear burn wave propagation across an ultrahigh magnetic field
Thermonuclear burn wave propagation across an ultrahigh magnetic field
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热核燃烧波在超高磁场中的传播
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
S. Zalesak
中科院分区：
文献类型：
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作者：
A. Velikovich;J. Giuliani;R. W. Clark;S. Zalesak
只提供摘要形式。人们很早以前就注意到，如果将等离子体与携带磁场的通量同时压缩，使其从种子值~ 100 kG降至峰值~ 100 MG，则圆柱形目标中惯性约束聚变（ICF）点火的要求可以显著放宽。超高的轴向磁场使热点与压缩它的冷壁隔绝，并限制了聚变粒子。参考文献1中设想的两种通过脉冲功率2和激光烧蚀3的内爆等离子体压缩磁通量的方法已经被证明是有效的，分别产生42毫克和36毫克的峰值场。最近的数值模拟结果4,5预测了在下一代快速多毫安大电流设备驱动的通量压缩负载下ICF （MAGLIF）点火和高能量增益的可能性。
Summary form only given. It had been noticed long ago1 that the requirements for inertial confinement fusion (ICF) ignition in a cylindrical target can be significantly relaxed if the plasma were compressed simultaneously with the flux of the entrained magnetic field from its seeded value ∼100 kG to the peak value of ∼100 MG. The ultrahigh axial magnetic field insulates the hot spot from the cold walls compressing it and confines the fusion a-particles. Both approaches to magnetic flux compression by imploding plasmas envisioned in Ref.1, with pulsed power2 and laser ablation,3 have been demonstrated to work, producing peak fields of 42 MG and 36 MG, respectively. Recent numerical simulation results4,5 have predicted the possibility of ICF (MAGLIF) ignition and high energy gain in a flux-compression load driven by a next-generation fast multi-MA high-current facility.