Application of thermal effect of infrared light to forming uniform DD layers in spherical cryotarget

Based on the request of the solid fuel in inertial confinement fusion (ICF) capsule and the thermal effect of infrared (IR) light, the IR lights function of changing the spatial distribution and micro-structure of solid deuterium is studied. It is found that with the special IR light (3140 nm, 100 W), the micro-structure of solid deuterium is changed from polycrystal to monocrystal, the solid deuterium is redistributed and becomes more uniform. The exhibition of optical image is that a distinct bright band appears. By analysis of the bright band, the RMS surface roughness of the solid deuterium is calculated.