Hot-spot mix in ignition-scale implosions on the NIF
Hot-spot mix in ignition-scale implosions on the NIF
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DOI：
10.1063/1.3694057
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发表时间：
2012-03
影响因子：
2.2
通讯作者：
S. Regan;R. Epstein;B. Hammel;L. Suter;J. Ralph;H. Scott;M. Barrios;D. Bradley;D. Callahan;C. Cerjan;Gilbert W. Collins;S. Dixit;T. Doeppner;M. Edwards;D. Farley;S. Glenn;S. Glenzer;I. Golovkin;S. Haan;A. Hamza;D. Hicks;N. Izumi;J. Kilkenny;J. Kline;G. Kyrala;O. Landen;T. Ma;J. Macfarlane;R. Mancini;R. Mccrory;N. Meezan;D. Meyerhofer;A. Nikroo;K. Peterson;T. Sangster;P. Springer;R. Town
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文献类型：
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作者：
S. Regan;R. Epstein;B. Hammel;L. Suter;J. Ralph;H. Scott;M. Barrios;D. Bradley;D. Callahan;C. Cerjan;Gilbert W. Collins;S. Dixit;T. Doeppner;M. Edwards;D. Farley;S. Glenn;S. Glenzer;I. Golovkin;S. Haan;A. Hamza;D. Hicks;N. Izumi;J. Kilkenny;J. Kline;G. Kyrala;O. Landen;T. Ma;J. Macfarlane;R. Mancini;R. Mccrory;N. Meezan;D. Meyerhofer;A. Nikroo;K. Peterson;T. Sangster;P. Springer;R. Town
惯性约束聚变（ICF）靶的点火依赖于具有足够温度和面密度的中心热点的形成。流体动力学不稳定性会增强热点的辐射和传导损失。当前国家点火设施（NIF）点火靶的同心球形层由围绕低温热核燃料的薄壳的塑料烧蚀体（即，氢同位素），其中燃料蒸气填充内部体积[S. W.哈安等人，等离子体18，051001（2011）]。Rev.5烧蚀体掺有Ge，以最小化由黑腔X射线驱动器的Au M带发射引起的最靠近DT冰的烧蚀体的预热[D. S. Clark等人，物理等离子体17，052703（2010）]。由高模式（50<l<200）烧蚀剂表面扰动引发的Richtmyer-Meshkov和Rayleigh-Taylor流体动力学不稳定性可导致Ge掺杂烧蚀剂在加速阶段结束时混入壳体内部[B. A.哈梅尔等人，物理等离子体
Ignition of an inertial confinement fusion (ICF) target depends on the formation of a central hot spot with sufficient temperature and areal density. Radiative and conductive losses from the hot spot can be enhanced by hydrodynamic instabilities. The concentric spherical layers of current National Ignition Facility (NIF) ignition targets consist of a plastic ablator surrounding a thin shell of cryogenic thermonuclear fuel (i.e., hydrogen isotopes), with fuel vapor filling the interior volume [S. W. Haan et al., Phys. Plasmas 18, 051001 (2011)]. The Rev. 5 ablator is doped with Ge to minimize preheat of the ablator closest to the DT ice caused by Au M-band emission from the hohlraum x-ray drive [D. S. Clark et al., Phys. Plasmas 17, 052703 (2010)]. Richtmyer–Meshkov and Rayleigh–Taylor hydrodynamic instabilities seeded by high-mode (50<l<200) ablator-surface perturbations can cause Ge-doped ablator to mix into the interior of the shell at the end of the acceleration phase [B. A. Hammel et al., Phys. Plasma...