惯性约束聚变靶用空心玻璃微球的渗透性能  

Permeability of hollow glass microspheres for inertial confinement fusion targets by dried-gel method

作　　者：漆小波[1] 张占文[1] 高聪[1,2] 李波[1] 魏胜[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]四川大学化学工程学院,成都610065

出　　处：《强激光与粒子束》2012年第10期2365-2370,共6页High Power Laser and Particle Beams

基　　金：高温高密度等离子体物理国防科技重点实验室基金项目(9140C6806030908)

摘　　要：为实现对干凝胶法空心玻璃微球(HGM)渗透性能的有效调控,研究了初始玻璃配方、载气成分、精炼温度、精炼区长度、HGM壁厚对HGM渗透性能的影响。结果表明:当精炼温度低于1400℃时,初始玻璃配方对HGM渗透性能有显著影响。但是,随着精炼温度的升高和精炼区长度的延长,液态玻璃中碱金属氧化物的挥发比例逐渐增大,由不同初始玻璃配方制备的HGM对氘气的渗透性能逐渐趋近于相同。随着载气中氦气体积分数的降低或HGM壁厚的增大,室温下HGM对氘气的渗透系数逐渐减小。To investigate the deuterium permeation properties of hollow glass microspheres （HGMs） for inertial confine ment fusion （ICE） targets, HGMs with different initial glass composition were fabricated by dried gel method under different at- mosphere compositions in the furnace, temperatures, and lengths of refining zone. The permeability of HGMs with different wall thicknesses to deuterium gas under ambient condition was tested. The results show that when the refining temperature is lower than 1400℃, the initial glass composition has notable effects on the deuterium-gas permeability of HGMs. However, the volatili zation rates of alkali oxides in liquid glass bubbles increase with the temperature and the length of the refining zone, consequently, the permeability coefficients of HGMs made with different initial glass compositions increase and gradually approach to that of sili ca glass. With 1he total gas pressure unchanged, increasing the volume ratio of helium gas to argon gas in the furnace can enhance the permeability of HGMs. The permeability coefficient of HGMs to deuterium gas decreases with the increasing of the HGMs＇ wall thickness.

关 键 词：空心玻璃微球 渗透性能 干凝胶法 惯性约束聚变 

分 类 号：TL639.11[核科学技术—核技术及应用] TQ171[化学工程—玻璃工业]