核数据调整方法研究现状与发展  

Research Status and Development of Nuclear Data Adjustment Methods

作　　者：阳文俊 胡赟[1] YANG Wenjun;HU Yun

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《科技创新与应用》2023年第27期24-28,共5页Technology Innovation and Application

基　　金：中核科发[2021]122号工程科研项目(FA222512000206)。

摘　　要：随着计算程序与输运理论的不断发展,核数据的不确定度已经成为反应堆物理计算主要不确定度来源。核数据调整方法利用高精度的积分实验信息和协方差数据对多群常数或微观评价数据进行定量调整,能够有效降低核数据的不确定度,提高反应堆物理计算精度。该文介绍核数据调整方法的基本原理,总结国内外核数据调整方法发展的现状,并对我国核数据调整方法的未来发展方向提出意见。With the continuous development of calculation programs and transport theory,the uncertainty of nuclear data has become the main source of uncertainty in reactor physical calculation.The nuclear data adjustment method uses high-precision integral experimental information and covariance data to quantitatively adjust the multi-group constant or microscopic evaluation data,which can effectively reduce the uncertainty of nuclear data and improve the accuracy of reactor physical calculation.This paper introduces the basic principles of nuclear data adjustment methods,summarizes the present situation of the development of nuclear data adjustment methods at home and abroad,and puts forward some suggestions on the future development direction of nuclear data adjustment methods in China.

关 键 词：核数据调整方法 广义线性最小二乘法(GLLSM) 核数据 不确定度 反应堆物理 

分 类 号：O571[理学—粒子物理与原子核物理]