辐射加热腔诊断孔堵口特性实验研究

Experimental Study on Pinhole Closure of Diagnostic Pinhole in the Radiation Heated Cavity

研究辐射加热腔诊断孔堵口现象。实验采用波长为１．０５３μｍ、能量为３００～４００Ｊ、脉宽为～８００ｐｓ的高斯型激光脉冲，双束对打具有双源区的腔靶。在激光入射口及内爆腔诊断口用两台亚千电子伏特Ｘ射线能谱仪监测源区与内爆区发射的Ｘ光谱。定性分析和讨论了堵口现象。

The study on pinhole closure of diagnostic pinhole in the cavity heated by radiation is reported. Laser Wavelength of 1. 053 μm, energy 300-400 J, pulse width -800 ps with Gaussian shape are used in the experiments. Two laser beams drive the Cavity target with two source regions. The sub-keV X-ray spectrum from source region and implosion region were measured by two sub-- keV X- ray energy spectrometers respectively through laser incidence hole and diagnostic hole. The pinhole closure problom was qualitatively analysed and discussed.