Development of Surface Perturbation Target and Thin Silicon Foil Target Used to Research Rayleigh-Taylor Instability in Inertial Confinement Fusion Experiment

The developments of the surface perturbation target and the thin silicon foil target used to research Rayleigh-Taylor instability in the resolved experiments of Inertial Confinement Fusion(ICF) are carried out. Based on the laser interference process combined with the figure-transfer process, the surface perturbation target with sine modulated perturbation is gotten, the wavelength is in the range of 20～100 μm and the amplitude is several micrometers. The thin silicon foil with the thickness about 3～4 μm is prepared by semiconductor process together with heavy-doped self-stop etching. Combined with ion beam etching, the check or the stripe patterns are transferred to the surface of thin silicon foils, and then the silicon grating foil is obtained.