Experimental studies of ICF indirect-drive Be and high density C candidate ablators
Experimental studies of ICF indirect-drive Be and high density C candidate ablators
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ICF间接驱动Be和高密度C候选烧蚀器的实验研究
DOI：
10.1088/1742-6596/112/2/022004
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
B. MacGowan
中科院分区：
文献类型：
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作者：
O. Landen;D. Bradley;D. Braun;V. Smalyuk;D. Hicks;P. Celliers;S. Prisbrey;R. Page;T. Boehly;S. Haan;D. Munro;R. Wallace;A. Nikroo;A. Hamza;J. Biener;C. Wild;E. Woerner;R. Olson;G. Rochau;M. Knudson;D. Wilson;H. Robey;Gilbert W. Collins;D. Ho;J. Edwards;M. Marinak;B. Hammel;D. Meyerhofer;B. MacGowan
为了验证我们对这些候选烧蚀体对NIC相关X射线驱动的宏观和微观流体动力学和状态方程响应的建模，多实验室实验计划已经验证了这些新烧蚀体的行为。首先，在Z和OMEGA设备上测量了Be和HDC在单冲击驱动或双冲击驱动下熔体开始和终止的压力。其次，在欧米茄设施的规模实验中，硬X射线预热的水平和效果已经被量化。第三，已经开发了长平面X射线驱动器，以检查加速时消融前沿的2D和3D扰动增长。这个概念已经扩展到研究减速时消融器-冰界面处和附近的生长。此外，已经完成了实验设计，用于验证由于Be和HDC第一次和第二次冲击过境期间熔化后可能存在的残留微观结构而导致的预期低水平扰动播种。到目前为止的结果表明，Be和HDC都可以保持消融选择，并指导脉冲整形设计。
To validate our modeling of the macroscopic and microscopic hydrodynamic and equation of state response of these candidate ablators to NIC-relevant x-ray drive, a multi-lab experimental program has been verifying the behavior of these new ablators. First, the pressures for onset and termination of melt for both Be and HDC under single or double shock drive has been measured at the Z and OMEGA facilities. Second, the level and effect of hard x-ray preheat has been quantified in scaled experiments at the Omega facility. Third, a long planar x-ray drive has been developed to check 2D and 3D perturbation growth at the ablation front upon acceleration. The concept has been extended to study growth at and near the ablator-ice interface upon deceleration. In addition, experimental designs for validating the expected low level of perturbation seeding due to possible residual microstructure after melt during first and second shock transit in Be and HDC have been completed. Results so far suggest both Be and HDC can remain ablator choices and have guided pulse shaping designs.