ICF靶用空心玻璃微球耐压性能测试

 利用自行研制的空心微球耐外压装置和充气装置，测试了目前激光惯性约束聚变实验打靶使用的空心玻璃微球耐内压能力和耐外压能力。空心玻璃微球采用液滴法制备，直径为180～250 mm、壁厚为0.8~4.0 mm。理论计算表明，当微球纵横比超过90时，耐外压能力与球壳材料的杨氏模量有关，由此测量得到的空心玻璃微球杨氏模量为55~75 GPa。玻璃微球的耐内压能力主要与球壳材料的抗拉强度有关，实验测量得到的玻璃微球抗拉强度为90~140 MPa。

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.