压缩氘氚球的热核燃烧特性研究  

Thermonuclear burn characteristics of compressed deuterium-tritium microspheres

作　　者：吴俊峰[1] 叶文华[1] 张维岩[1] 

机构地区：[1]北京应用物理与计算数学研究所

出　　处：《物理学报》2010年第4期2381-2390,共10页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10775020);国家重点基础研究发展计划(批准号:2007CB814802)资助的课题~~

摘　　要：本文利用LARED-S程序模拟了等密度和等压力条件下压缩氘氚球的热核反应燃烧过程.对于等密度模型,模拟了两个具体算例,与国外计算结果进行了比较,验证了程序的可靠性.对于等压力模型,利用数值模拟给出了热核反应燃烧与压缩氘氚球初始状态之间的关系曲线,分析发现,氘氚装量、压力和主燃料密度的增加有利于提高热核反应放能和燃耗,中心热斑的温度和面密度分别达到70—80MK和3—4kg·m-2时热核反应才有显著的放能,提高主燃料密度,可以适当放宽对中心热斑的点火要求.最后对实际点火靶进行了数值模拟并且与等压力模拟计算结果进行了比较分析.The thermonuclear burn characteristics of compressed deuterium-tritium microspheres are simulated with LARED-S code based on the isochoric and isobaric models.Two examples of the isochoric model are simulated and compared with the other present data for validating the LARED-S code.For the isobaric model,numerical results characterizing the thermonuclear burn for a broad range of initial conditions are presenteal.It is shown that the yield and burn-up fraction increase with the total fuel mass,pressure and main-fuel density.It is necessary for the hot-spot to reach temperatures up to 70 to 80 MK and areal density 3 to 4 kg· m-2 to obtain considerable fusion energy.If the main-fuel density is increased high enough,the hot-spot condition for ignition could be broadened to a lower limit.Finally,the results of the isobaric model are compared with those of the actual ignition targets simulated with the LARED-S code.

关 键 词：压缩氘氚球 等密度模型 等压力模型 热核反应聚变 

分 类 号：O572.351[理学—粒子物理与原子核物理]