摘要
D-T聚变堆包层的主要功能包括氚增殖、能量转换和辐射屏蔽等,包层中子学设计的主要原则是满足聚变堆的氚自持,一般要求包层氚增殖比TBR>1.1。使用与时间有关的扩散理论和本征函数展开方法,研究不同几何线度、6Li丰度的Li2O、LiPb包层材料14 MeV源下的系统通量、氚增殖比的影响,及在不同6Li丰度下6Li、7Li造氚随时间变化的规律。计算中使用了30群截面数据,微观数据来自ENDF/B-VI及JEF-2.2。
In view of the blanket of deuterium-tritium fusion reactor, the main function includes tritium breeding, energy transfer, and radiation shielding. The neutronics analysis of breeder blanket is presented to achieve the goal of fuel self-sufficiency of the tritium breeding ratio, TBR should bell. 1. In this paper a time-dependent muhigroup diffusion equation and eigenfunction expansion method has been introduced. The effects on flux and TBR from Li2O and LiPb breeder, and the tritium breeding with time in ^6Li and ^7Li are discussed. For assemblies of different sizes and different concentration of ^6Li, numerical calculations are using the 30 group library derived from ENDF/B-Ⅵ and JEF-2.2.
出处
《核科学与工程》
CSCD
北大核心
2006年第3期283-288,共6页
Nuclear Science and Engineering
基金
计算物理实验室基金资助项目(51479050105ZW0906)
