氘气透过高纵横比空心玻璃微球的实验研究

为了测试用于激光聚变实验的高纵横比空心玻璃微球(HGM)对D2气保气性能及计算HGM内D2剩余量，对3种常用配方HGM及其用0.5MNH4F＋0.1MHNO3洗液在90℃下处理后的HGM分别在573K下分三步热扩散充D2气，然后在290K下分别在0h、72h、144h时用气泡法测量HGM内的D2气压，由此测定了D2气体透过HGM的充气速率和漏气速率及其表观扩散活化能，并给出它们对D2保气半时间或充气半时间随HGM直径、壁厚和温度变化的计算式。

Experimental Study on the Permeability of D2 through Hollow Glass Microspheres with High Aspect Ratios

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.