4MA以下电流驱动垂直动态黑腔的自适应性

Self-adaptivity of columned dynamic hohlraums for Z-pinch on 4 MA drivers

在4 MA以下电流驱动Z箍缩黑腔辐射特性和耦合效率研究牵引下,研制出了柱型动态黑腔。利用CHO低密度泡沫的自持能力,结合辅助夹具解决了泡沫柱的装配及定位问题。基于负载丝受小应变作用,丝阵和泡沫柱通过μm量级的自由滑动和转动,具备自动适应靶室环境变化能力。实验结果表明:研制出的动态黑腔在Angara-5-1装置环境中具有自动适应能力,各项参数满足物理实验的需求,获得的最高动力学黑腔X光辐射温度为62.7 eV,实验结果重复性优于91.5%。

It is important to characterize the dynamic hohlraum＇s radiation and coupling efficiency in Z-pinch physical experi- ments. The difficulty in the columned dynamic hohlraums presents unique challenges and opportunities for target fabrication, espe- cially their self-adaptivity. Columned dynamic hohlraums were developed. The low density CHO foams were assembled and fixed by assistant clamp and their self-sustaining ability. In the condition of small strain, wire arrays and foams can automatically adapt to the environment change of target chamber, through free rotation and slide in micron-level. The results show that, the dynamic bohlraums meet the requirement of the Z-pinch physics experiment, and is self-adaptive on the Angara 5-1 facility. The maximal X-ray temperature is 62.7 eV, and the result reproducibility is more than 91.5%.