在天光一号装置上开展了KrF准分子激光驱动约束层靶产生高速飞片的实验研究,并利用成像型速度干涉仪(Imaging-VISAR)对飞片自由面速度进行诊断。辐照激光为短波长(~248nm)、长脉宽(~28ns)的KrF激光,光束不均匀性小于2%。实验用约束层靶以磁控溅射方法制备,基底为4mm厚石英晶体,铝膜厚10μm。实验中条纹 KrF excimer laser-driven confinement layer target was used to produce high-speed flying-blade test. The imaging free-space interferometer (Imaging-VISAR) was used to diagnose the free-surface velocity of fly-blade. The irradiated laser is a KrF laser with a short wavelength (~ 248 nm) and a long pulse width (~ 28 ns) with less than 2% beam inhomogeneity. The experimental constrained layer target was prepared by magnetron sputtering. The substrate was 4mm thick quartz crystal and the thickness of aluminum film was 10μm. Stripes in the experiment