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首页> 外文期刊>Bulletin of the American Physical Society >APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Hydro-scaling of DT implosions on the National Ignition Facility
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APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Hydro-scaling of DT implosions on the National Ignition Facility

机译：APS-等离子体物理APS部门第59届年会-事件-国家点火装置上的DT内爆的水压缩放

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摘要

Recent implosion experiments on the National Ignition Facility (NIF) exceed 50 kJ in fusion yield and exhibit yield amplifications of extgreater 2.5-3x due to alpha-particle self-heating of the hot-spot. Two methods to increase the yield are (i) to improve the implosion quality, or stagnation pressure, at fixed target scale (by increasing implosion velocity, reducing 3D effects, etc.), and (ii) to hydrodynamically scale the capsule and absorbed energy. In the latter case the stagnation pressure remains constant, but the yield---in the absence of alpha-heating---increases as Yextasciitilde Sextasciicircum 4.5, where the capsule radius is increased by S, and the absorbed energy by Sextasciicircum 3. With alpha-heating the increase with scale is considerably stronger. We present projections in the performance of current DT experiments, and the extrapolations to ignition, based on applying hydro-scaling theory and accounting for the effect of alpha-heating. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
机译：国家点火装置（NIF）上最近的爆破实验的融合产量超过50 kJ，由于热点的α粒子自热作用，其膨胀率提高了2.5-3倍。两种提高产量的方法是（i）在固定目标比例下（通过提高内爆速度，降低3D效应等）来改善内爆质量或停滞压力;以及（ii）在流体动力学上缩放胶囊和吸收的能量。在后一种情况下，停滞压力保持恒定，但是产量（在没有α加热的情况下）增加了Yextasciitilde Sextasciicircum 4.5，其中胶囊半径增加S，而吸收能量则由Sextasciicircum 3引起。 α加热随氧化皮的增加明显更大。在应用水垢理论并考虑α加热的影响的基础上，我们介绍了当前DT实验性能的预测以及对点火的外推。这项工作是在劳伦斯·利弗莫尔国家实验室根据合同DE-AC52-07NA27344在美国能源部的主持下进行的。

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