Simulations of fill tube effects on the implosion of high-foot NIF ignition capsules
Simulations of fill tube effects on the implosion of high-foot NIF ignition capsules
复制标题
高脚 NIF 点火舱内爆填充管效应的模拟
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
J. Kline
中科院分区：
文献类型：
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作者：
T. Dittrich;O. Hurricane;L. Berzak;D. Callahan;D. Casey;D. Clark;E. Dewald;T. Doeppner;S. Haan;B. Hammel;J. Harte;D. Hinkel;B. Kozioziemski;A. Kritcher;T. Ma;A. Nikroo;A. Pak;T. Parham;H. Park;P. Patel;B. Remington;J. Salmonson;P. Springer;C. Weber;G. Zimmerman;J. Kline
在碳基烧蚀器点火胶囊内爆过程中使用强烈的第一冲击已经获得了令人鼓舞的结果。这些“高脚”内爆结果表明，随着激光功率和能量的增加，胶囊性能偏离一维预期。造成这种偏差的一个可能原因是来自胶囊填充管的射流对热点的破坏。名义上，这些内爆中使用外径为 10 μm 的玻璃 (SiO2) 填充管。模拟表明，玻璃管上的薄金涂层可以减少热点破坏。将介绍这些结果和其他缓解策略。
Encouraging results have been obtained using a strong first shock during the implosion of carbon-based ablator ignition capsules. These “high-foot” implosion results show that capsule performance deviates from 1D expectations as laser power and energy are increased. A possible cause of this deviation is the disruption of the hot spot by jets originating in the capsule fill tube. Nominally, a 10 μm outside diameter glass (SiO2) fill tube is used in these implosions. Simulations indicate that a thin coating of Au on this glass tube may lessen the hotspot disruption. These results and other mitigation strategies will be presented.