关键词: 激光聚变靶丸;空心玻璃微球;D2扩散速率;保气半时间计算式

Abstract: To test the ability to retain D2 of hollow glassmicrospheres(HGM) with high aspect ratios and to calculate the left pressures of D2 inside which varied with time and temperature,6 kinds of HGM,among which 3 kinds had different components and the other 3 kinds were their washed counterparts,were filled with D2 at 573K by three steps and then kept at 290K in three groups. The pressures of D2 inside them were then measured by bubble method at 0h, 72h and 144h respectively. Then the permeabilities of D2 through each kind HGM at 573K and 290K and the apparent activation energy were obtained experimentally. And the D2 retention half-lives in the 6 kinds of HGM were formulated with the temperatures,HGM’s diameter and wall-thickness and the apparent activation energy.