Abstract:

The purpose of this paper was to describe hollow plastic microspheres filling with D2 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 D2 retention to be about 28—37 h.