Simultaneous Evaluation for Correlated Data of 239Pu, 238U, 235U(n,f) and 238U(n,γ) Cross Section

  • Liu Tingjin
  • Deng Jingshan
Conference paper
Part of the Research Reports in Physics book series (RESREPORTS)


A way to construct tne covariance matrices of the multi-set experimental data has been studied. The simultaneous evaluation for correlated data proposed in this paper has been applied to evaluate the cross sections of 239Pu(n,f), 238U(n,f), 238U(n,α) and 235U(n,f) and the ratios Rf(239Pu)/ σf(235U)], Rf(238U)/σf(235U)] and Rα(238U) / σf(235U)] and their covariance matrices were constructed. The consistent relations of different reaction cross sections and the correlations of experimental data have been taken into account in the evaluations.


neutron data evaluation simultaneous evaluation spline fitting covariance matix correlative data processing fission crosss section capture cross section 235238239Pu 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Liu Tingjin
    • 1
  • Deng Jingshan
    • 1
  1. 1.Chinese Nuclear Data CenterInstitute of Atomic EnergyBeijingP. R. China

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