Fabrications of Metallic Oxide Doped Polystyrene Shells via Emulsion Techniques

New-type metallic oxide (M 2 O 3 M = Cr, Al) doped plastic shells used for inertial confinement fusion experiments are fabricated with emulsion techniques. Three different phases of solution (Wj, O, and W 2 ) are adopted for the fabrication process. The W 1 phase is 1 wt% of sodium lauryl sulfate in water. The W 1 phase solution is mixed with a 3 wt% M 2 O 3 -PS solution in benzenedichloroethane (O phase) while stirring. The mixed emulsion (W 1 /O) is then poured into a 3 wt% aqueous polyvinyl alcohol solution (W 2 phase) while stirring. The resulting emulsion (W 1 /O/W 2 ) is heated to evaporate benzene and dichloroethane, and thus, a solid M 2 O 3 -PS shell is formed. The diameter and wall thickness of the shells are 300 and 5 μm, respectively. The average surface roughness of the final products is