Covariance Matrices for Differential and Angle Integrated Neutron-Induced Elastic and Inelastic Scattering Cross Sections of 56Fe

被引：6

作者：

Chen, Shengli ^{[1
,2
]}

Bernard, David ^{[1
]}

Archier, Pascal ^{[1
]}

De Saint Jean, Cyrille ^{[1
]}

Noguere, Gilles ^{[1
]}

Tamagno, Pierre ^{[1
]}

机构：

[1] CEA, DEN DER SPRC LEPh, F-13108 St Paul Les Durance, France

[2] Univ Grenoble Alpes, I MEP2, F-38402 St Martin Dheres, France

来源：

5TH INTERNATIONAL WORKSHOP ON NUCLEAR DATA EVALUATION FOR REACTOR APPLICATIONS (WONDER-2018) | 2019年 / 211卷

关键词：

D O I：

10.1051/epjconf/201921107002

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Correlations between neutron inelastic scatterings angular distributions are not included in the Joint Evaluated Fission and Fusion (JEFF) nuclear data library, while they are key quantities for uncertainty propagation of nuclear data. By reproducing the angle-integrated cross sections and uncertainties of JEFF-3.1.1, the present work obtains covariance matrix between high energy model parameters using the least square method implemented in the CONRAD code. With this matrix, it is possible to generate correlations between angle-integrated cross sections and angular distributions, which are usually presented by Legendre coefficients. As expected, strong correlations are found, for example, between the Legendre coefficients of elastic and first-level-inelastic scatterings and the angle-integrated total, elastic, total inelastic cross sections.

引用

页数：7

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