稠密聚变靶等离子体中的种子超高斯湍流

D. Tidman
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引用次数: 10

摘要

致密等离子体靶(如聚焦激光或REB脉冲产生的等离子体)化学成分的细微变化会引起电子密度的相应空间波动,这种波动会持续到扩散或湍流混合分散为止。在存在足够陡的背景温度梯度的情况下,这些密度波动预计会在等离子体温度约为一千伏时引起兆高斯磁场波动。成分波动也会在低温目标中产生电阻率波动,并在载流等离子体中产生大磁场。这一现象可能对电子束驱动聚变靶的设计有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seeded mega-Gauss turbulence in dense fusion target plasmas
Fine scale variations in the chemical composition of a dense plasma target (such as a plasma produced by a focused laser or REB pulse) give rise to corresponding spatial fluctuations in the electron density which persist until dispersed by diffusive or turbulent mixing. In the presence of a sufficiently steep background temperature gradient these density fluctuations are expected to give rise to mega-Gauss magnetic field fluctuations for plasma temperatures of about a kilovolt. Composition fluctuations would also produce resistivity fluctuations in low-temperature targets and generate large fields in current-carrying plasmas. This phenomenon may be of interest in the design of targets for electron beam driven fusion.
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