神光Ⅱ与神光Ⅲ原型上的辐射驱动小收缩比内爆靶设计  

Design of implosion capsules with low convergence ratio driven by radiation on Shenguang Ⅱ and Shenguang Ⅲ prototype laser facilities

作　　者：江少恩[1] 缪文勇[1] 况龙钰[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,绵阳621900

出　　处：《物理学报》2011年第5期480-486,共7页Acta Physica Sinica

基　　金：国家高技术研究发展计划;国家自然科学基金(批准号:10775120)资助的课题~~

摘　　要：本文建立辐射驱动小收缩比(5至10倍)的内爆靶丸的设计方法,并利用辐射流体力学程序Multi-1d对神光Ⅱ和神光Ⅲ原型装置的辐射驱动小收缩比内爆靶丸进行模拟计算,设计出小收缩比内爆靶丸的构形,计算结果给出压缩比、中子产额、压缩面密度随燃料压力变化等内爆物理参量.神光Ⅱ装置上的内爆靶燃料分别采用DD气体和DT气体两种;神光Ⅲ原型装置的内爆靶燃料采用DD气体.神光Ⅱ上小收缩比内爆实验结果与模拟结果基本一致,表明Multi-1d用于设计此类实验的可靠性.The design method for implosion capsules with low convergence ratio driven by radiation was dweloped.These kinds of the capsules used for the experiment on Shenguang II（SG-II） and Shenguang III prototype（SG-III-P） laser facilities were simulated using Multi-1d code.The implosion targets were designed,and the variations of convergence ratio,neutron yield and area density vs fuel pressure were obtained from the simulation.Two kinds of implosion targets with low convergence ratio on SG-II which were filled with DD and DT fuels respectively and a kind of the target on SG-III-P filled with DD were designed.The neutron yield calculated by Multi-1d with low convergence ratio agreed with the experimental data on Shenguang II laser facility.It showed that Multi-1d is reliable for use with these experiments.

关 键 词：辐射驱动 小收缩比 内爆 面密度 

分 类 号：TL632[核科学技术—核技术及应用]