Effects of the gas-filling temperature on the PS-PVA-CH hollow plastic microsphere properties

The basic target used in many inertial confinement fusion(ICF) experiments is a hollow microsphere of glass or plastic. Generally, the hollow plastic microsphere is composed of three layers: polystyrene(PS), polyvinyl alcohol(PVA) and carbon hydrogen(CH).This paper focuses on the filling-gas temperature effects on the PS-PVA-CH hollow plastic microsphere properties such as the shell strength and the surface quality. Experiments show that although the material of PS and PVA has high decomposed temperature the strength decreases rapidly as the temperature increases. The PS-PVA shell strength is not enough for Ar-filling. After coating the CH ablator the microsphere can be filled with Ar at 110℃.