First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility
First results of radiation-driven, layered deuterium-tritium implosions with a 3-shock adiabat-shaped drive at the National Ignition Facility
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DOI：
10.1063/1.4929912
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发表时间：
2015-08
影响因子：
2.2
通讯作者：
V. Smalyuk;H. Robey;T. Döppner;O. Jones;J. Milovich;B. Bachmann;K. Baker;L. B. Hopkins;E. Bond;D. Callahan;D. Casey;P. Celliers;C. Cerjan;D. Clark;S. Dixit;M. Edwards;E. Giraldez;S. Haan;A. Hamza;M. Hohenberger;D. Hoover;O. Hurricane;K. Jancaitis;J. Kroll;K. Lafortune;O. Landen;B. MacGowan;A. MacPhee;A. Nikroo;A. Pak;P. Patel;J. Peterson;C. Weber;C. Widmayer;C. Yeamans
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文献类型：
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作者：
V. Smalyuk;H. Robey;T. Döppner;O. Jones;J. Milovich;B. Bachmann;K. Baker;L. B. Hopkins;E. Bond;D. Callahan;D. Casey;P. Celliers;C. Cerjan;D. Clark;S. Dixit;M. Edwards;E. Giraldez;S. Haan;A. Hamza;M. Hohenberger;D. Hoover;O. Hurricane;K. Jancaitis;J. Kroll;K. Lafortune;O. Landen;B. MacGowan;A. MacPhee;A. Nikroo;A. Pak;P. Patel;J. Peterson;C. Weber;C. Widmayer;C. Yeamans
辐射驱动，分层氘氚塑料胶囊内爆进行了使用一个新的，3冲击“箭帽形”的国家点火装置的驱动器。烧蚀层成形的目的是使用更强的第一激波，减少烧蚀层中流体动力学不稳定性的增长。冲击波在到达氘-氚燃料之前会衰减，使其处于较低的可压缩状态，并允许更高的燃料压缩。与类似的“高脚”内爆相比，这种新的驱动器使燃料面密度提高了25%，而与以相同的压缩和内爆速度驱动的“低脚”内爆相比，中子产额提高了4倍以上。
Radiation-driven, layered deuterium-tritium plastic capsule implosions were carried out using a new, 3-shock “adiabat-shaped” drive on the National Ignition Facility. The purpose of adiabat shaping is to use a stronger first shock, reducing hydrodynamic instability growth in the ablator. The shock can decay before reaching the deuterium-tritium fuel leaving it on a low adiabat and allowing higher fuel compression. The fuel areal density was improved by ∼25% with this new drive compared to similar “high-foot” implosions, while neutron yield was improved by more than 4 times, compared to “low-foot” implosions driven at the same compression and implosion velocity.