Measurement of high-pressure shock waves in cryogenic deuterium-tritium ice layered capsule implosions on NIF.
Measurement of high-pressure shock waves in cryogenic deuterium-tritium ice layered capsule implosions on NIF.
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DOI：
10.1103/physrevlett.111.065003
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发表时间：
2013-08
影响因子：
8.6
通讯作者：
H. Robey;J. Moody;P. Celliers;J. S. Ross;J. Ralph;S. Le Pape;L. B. Berzak Hopkins;T. Parham
中科院分区：
文献类型：
--
作者：
H. Robey;J. Moody;P. Celliers;J. S. Ross;J. Ralph;S. Le Pape;L. B. Berzak Hopkins;T. Parham
在国家点火装置上进行了低温氘-氚（DT）冰层胶囊内爆的多重高压冲击波的首次测量。这些冲击的强度和相对时间必须调整到非常高的精度，以保持DT燃料的低熵和高压缩性。以往所有惯性约束聚变内爆激波时间的测量[j]。R. Boehly等人，物理学。Rev. Lett. 106, 195005 (2011), h.f. Robey et al., Phys。Rev. Lett. 108, 215004(2012)]已经在替代目标中进行了实验，其中固体DT冰壳和中央DT气体区域被连续的液体氘（D2）填充所取代。本报告首次对这种替代技术的假设进行了实验验证。
The first measurements of multiple, high-pressure shock waves in cryogenic deuterium-tritium (DT) ice layered capsule implosions on the National Ignition Facility have been performed. The strength and relative timing of these shocks must be adjusted to very high precision in order to keep the DT fuel entropy low and compressibility high. All previous measurements of shock timing in inertial confinement fusion implosions [T. R. Boehly et al., Phys. Rev. Lett. 106, 195005 (2011), H. F. Robey et al., Phys. Rev. Lett. 108, 215004 (2012)] have been performed in surrogate targets, where the solid DT ice shell and central DT gas regions were replaced with a continuous liquid deuterium (D2) fill. This report presents the first experimental validation of the assumptions underlying this surrogate technique.