Filling hollow PS-PVA-CH microspheres with deuterium
The purpose of this paper was to describe hollow plastic microspheres filling with D2 which served as inertial confinement fusion(ICF)targets.The microspheres were 300 μm in diameter and were composed of three layers:PS with 5—7 μm wall thickness,PVA with 3—5 μm and CH with 4—6 μm.The primary experiments showed that the equilibrium time was 20—40 h at 50℃,while 7—12 h at 70℃ and 2—4 h at 90℃.The equilibrium time increased by about 10 times from 90℃ to 50℃.The deuterium permeability of hollow plastic microspheres was (3.0—4.2)×10-19 mol·m-1·s-1·Pa-1 at room temperature(25℃).This corresponded to the half time for D2 retention to be about 28—37 h.