Gamma Reaction History ablator areal density constraints upon correlated diagnostic modeling of National Ignition Facility implosion experiments
Gamma Reaction History ablator areal density constraints upon correlated diagnostic modeling of National Ignition Facility implosion experiments
复制标题
伽玛反应历史烧蚀面密度对国家点火装置内爆实验相关诊断模型的约束
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Yongho Kim
中科院分区：
文献类型：
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作者：
C. Cerjan;D. Sayre;O. Landen;J. Church;W. Stoeffl;E. Grafil;H. Herrmann;N. Hoffman;Yongho Kim
利用惯性约束聚变（Inertial Confinement Fusion，ICF）舱内12C中子非弹性散射产生的γ射线信号，对壳体烧蚀层面密度进行了有效的诊断。实验采集的时间积分信号在4.4兆电子伏使用阈值检测从四个气体切伦科夫细胞提供了一个直接测量的12 C面密度附近的停滞。在最近的高中子产额国家点火装置实验活动中获得的数据的三维等压静态模型的应用揭示了两个总的趋势：较小的剩余烧蚀剂质量停滞和较高的壳密度，随着激光驱动器。
The inelastic neutron scattering induced γ-ray signal from 12C in an Inertial Confinement Fusion capsule is demonstrated to be an effective and general diagnostic for shell ablator areal density. Experimental acquisition of the time-integrated signal at 4.4 MeV using threshold detection from four gas Cerenkov cells provides a direct measurement of the 12C areal density near stagnation. Application of a three-dimensional isobaric static model of data acquired in a recent high neutron yield National Ignition Facility experimental campaign reveals two general trends: smaller remaining ablator mass at stagnation and higher shell density with increasing laser drive.