摘要
报道了成像型任意反射面速度干涉仪(VISAR)在快点火锥壳靶预热实验中的应用情况,对不同的金锥壳靶型在间接驱动条件下的预热情况进行了实验研究。结果表明,越厚的锥顶受X射线预热的影响越小。采用了5μm和10μm两种锥顶,其锥顶平面的预热速度最大分别为2.2km/s和0.6km/s,而其产生预热的时刻基本上与主激光峰值时刻一致。实验中获得了丰富细节的条纹图像,揭示了金锥在预热过程中的物理现象,表明成像型VISAR可以为自由面低速测量及快点火锥壳靶物理实验提供诊断基础。
The application of the imaging VISAR to the pre-heating experiment of Au conical target for fast ignition is proposed. The pre-heating experiments using different kinds of Au cones which have the diverse thicknesses of 5 μm and 10μm are studied. The experimental data show that the velocity of the two kinds of cone are 2.2 km/s and 0.6 km/s. Details of the pre-heating physical progress are described, which indicate that the Au cone having thickness of 10 μm is less affected by the pre-heating effect. The experimental results show that the imaging VISAR has the ability to measure the low velocity of free surface, and the whole facility is effective for further experiment.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第2期94-98,共5页
Acta Optica Sinica
关键词
测量
快点火
金锥壳靶
成像型VISAR
预热
measurement
fast ignition
Au conical target
imaging velocity interferometer system for any reflector
pre-heating
