传统核数据库与高能核数据库对ADS中MA核素嬗变物理参数的影响  

Transmutation Physical Parameters of MA Nuclides of ADS Calculated by Traditional Nuclear Data Library and High Energy Nuclear Data Library

作　　者：郭和伟[1,2,3] 陈伟 张信一[2,3] 江新标[2,3] 陈立新 张良[2,3] 马腾跃 王立鹏[2,3] GUO He-wei;CHEN Wei;ZHANG Xin-yi;JIANG Xin-biao;CHEN Li-xin;ZHANG Liang;MA Teng-yue;WANG Li-peng(School of Nuclear Science and Technolgy,Xi＇an Jiaotong University,Xi＇an 710049,China;Northwest Institute of Nuclear Technology,Xi＇an 710024,China;State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Xi＇an 710024,China)

机构地区：[1]西安交通大学核科学与技术学院,西安710049 [2]西北核技术研究所,西安710024 [3]强脉冲辐射环境模拟与效应国家重点实验室,西安710024

出　　处：《现代应用物理》2018年第3期21-26,共6页Modern Applied Physics

摘　　要：建立了燃耗耦合计算方法,并用基准题对其进行了验证。利用传统核数据库和高能数据库计算了热功率为1 000MW的ADS堆芯在不同燃耗下的有效增殖因数k_(eff)、有外源的有效增殖因数k_(eff,s)、质子束流强度I_p、MA核素的嬗变率及嬗变支持比。结果表明:传统核数据库和高能核数据库下计算的k_(eff)间的最大偏差及k_(eff,s)间的最大偏差均约为1%;传统核数据库下,I_p每300d平均增加7mA,MA核素的嬗变率为29.9%,嬗变支持比为36.7,高能核数据库下对应的I_p为8mA,MA核素的嬗变率为30.5%,嬗变支持比为37.3。这说明高能核数据库对MA核素嬗变物理参数的影响与传统核数据库的影响基本相当。The calculation method of burnup coupled is established and verified by a benchmark . The transmutation physical parameters for accelerator driven subcritical system（ADS） core with thermal power of 1 000 MW, including the effective multiplication factors k eff ,the effective multiplication factors with external neutron source k eff,s , the proton beam intensity I p, the transmutation rates, and the transmutation support ratio of MA nuclides are calculated by using the traditional nuclear data library and high energy nuclear data library, respectively. The results show that the maximum deviations of k eff and k eff,s in the two data libraries are both about 1%. Using the traditional nuclear data library, the proton intensity I p is calculated to increase by 7 mA on average every 300 days, the transmutation rate of MA nuclides is 29.9%, and the transmutation support ratio is 36.7 . However, using the high energy nuclear data library, the corresponding I p is 8 mA on average every 300 days, the transmutation rate of MA nuclide is 30.5%, and the transmutation support ratio is 37.3. This indicate that the two data libraries have the same effect on the physical parameters of MA nuclides transmutation.

关 键 词：次临界系统 外中子源 燃耗 嬗变 数据库 

分 类 号：TL329[核科学技术—核技术及应用]