High performance capsule implosions driven by the Z-pinch dynamic hohlraum
High performance capsule implosions driven by the Z-pinch dynamic hohlraum
复制标题
DOI：
10.1088/0741-3335/49/12b/s55
复制
发表时间：
2007-12
影响因子：
2.2
通讯作者：
G. Rochau;J. Bailey;G. Chandler;G. Cooper;G. Dunham;P. Lake;R. Leeper;R. Lemke;T. Mehlhorn
中科院分区：
文献类型：
--
作者：
G. Rochau;J. Bailey;G. Chandler;G. Cooper;G. Dunham;P. Lake;R. Leeper;R. Lemke;T. Mehlhorn
z捏动腔（ZPDH）是一种高功率x射线源，已用于各种高能量密度实验，包括惯性约束聚变（ICF）研究。该系统由一个钨丝阵列Z夹头组成，该夹头内爆到一个低密度CH2泡沫转化器上，发射辐射冲击，将热室加热到辐射温度bb0 200 eV。通过时间门控针孔相机测量，28次实验测得的平均冲击速度为326±4µm ns−1，弹间标准差为7%。宽带x射线测量表明，源激波的功率发射和脉冲形状的弹间再现性为40 kJ的x射线能量，在ICF点火所需能量的4倍之内。经过四年多的发展，ZPDH内爆的胶囊类型最终达到了创纪录的间接驱动DD热核中子产量，最高可达3.5E11。
The Z-pinch dynamic hohlraum (ZPDH) is a high-power x-ray source that has been used in a variety of high energy-density experiments including inertial confinement fusion (ICF) studies. The system consists of a tungsten wire-array Z pinch that implodes onto a low-density CH2 foam converter launching a radiating shock that heats the hohlraum to radiation temperatures >200 eV. Through time-gated pinhole camera measurements, the mean shock speed is measured from 28 experiments to be 326 ± 4 µm ns−1 with a shot-to-shot standard deviation of 7%. Broad-band x-ray measurements indicate that the shot-to-shot reproducibility in the power emission and pulse-shape of the source shock is 40 kJ of x-ray energy, within a factor of 4 of the energy believed sufficient for ICF ignition. The capsule types imploded by the ZPDH have evolved over four years culminating in a design that produces record indirect-drive DD thermonuclear neutron yields of up to 3.5E11.