Measurement of mechanism properties of hollow glass microspheres used for ICF experiments

This paper focused on the Yang’s module and the tensile strength of hollow glass microspheres which serve as inertial confinement fusion targets. Calculation indicated that for aspect ratio more than 90 the buckling was the failure mode when the gas pressure outside the capsule was high. Apparatuses for measuring the buckle and burst strengthes of microspheres were built. Based on the primary experiments, the calculations show that the Yong’s modular was 55~75 GPa and the tensile strength was 90~140 MPa for hollow glass microspheres.