为满足核工程对核数据的需求,对20 Me V以下65Cu(n,p)65Ni反应截面的实验数据进行了分析和评价,包括实验数据的收集、修正、选取、归一、误差调整和数据处理,在分析实验误差特别是关联误差的基础上构造了每家数据的协方差矩阵,最后利用样条拟合程序SPCC给出了评价截面数据和实验数据的协方差矩阵。评价不仅考虑了实验数据的误差,还考虑了数据间的相关性。 In order to meet the requirements of nuclear engineering for nuclear data, the experimental data of 65Cu (n, p) 65Ni reaction cross sections below 20 MeV were analyzed and evaluated, including the collection, modification, selection, normalization, error adjustment and data The covariance matrix of each data is constructed based on the analysis of experimental errors, especially the correlation errors. Finally, the spline fitting program SPCC is used to give the covariance matrixes of the evaluation section data and the experimental data. The evaluation considers not only the error of the experimental data but also the correlation between the data.