ICF平面冷冻靶制备中充气速率效应  

Effect of filling rates on preparation of planar cryotargets

作　　者：林伟[1] 王凯[1] 黎军[1] 刘元琼[1] 唐永建[1] 雷海乐[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

出　　处：《强激光与粒子束》2013年第12期3243-3246,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：基于自主研制的平面冷冻靶打靶系统及微管注入法充气/冷冻技术,探讨了不同充气速率对平面冷冻靶制备的影响。研究表明:随着充气速率的减小,靶盒内氢气压强的变化速率越小,液化过程越明显,并且持续的时间越长;充气速率越小,越能准确测量液氢在该温度下的饱和蒸气压。同时,确定了最佳充气速率,建立了利用饱和蒸气压标定液氢温度的方法。研制的平面冷冻靶已经成功提供ICF物理实验。On the homemade planar-cryotarget shooting system, we have studied the effect of different filling rate on pre- paring planar cryotargets. The results show that with slower filling rate, the variation of hydrogen pressure in target is small. Furthermore, the liquefaction procedure is more observable and the corresponding duration of time is longer. Slower filling rate is helpful for the accurate measurement of saturated vapor pressure of liquid hydrogen at that temperature. A calibration method based on the saturated vapor pressure is developed to in-situ determine the temperature of liquid hydrogen isotopes in the target cell, and an optimum filling rate of 0.8 mL/min is obtained. These studies are important to provide high quality and reliable hy- drogen isotopic planar cryotargets for ICF physical experiments.

关 键 词：惯性约束聚变 平面冷冻靶 充气速率 饱和蒸气压 温度标定 

分 类 号：O513[理学—低温物理]