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Consultants’ Meeting on Th/U Data , Vienna, 20-22 December 2010

Available experimental data on the neutron cross sections are analyzed on the basis of the unrecognized error-estimation method (UEEM) ; Estimated uncertainties are compared with the ENDF/A-VII and JENDL-4 evaluations; Main contradictions between the evaluated uncertainties are noted.

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Consultants’ Meeting on Th/U Data , Vienna, 20-22 December 2010

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  1. Available experimental data on the neutron cross sections are analyzed on the basis of the unrecognized error-estimation method (UEEM) ; Estimated uncertainties are compared with the ENDF/A-VII and JENDL-4 evaluations; Main contradictions between the evaluated uncertainties are noted. Uncertainties and Covariances of the Neutron Cross Sections for Th-232 and U-233 E.V.Gai, A.V.IgnatyukInstitute of Physics and Power Engineering, Obninsk Consultants’ Meetingon Th/U Data, Vienna, 20-22 December 2010

  2. Main relations A minimized functional for a set of experimental data Fican be written as where ωij = ωiδij + Sijis the weighting function that includes the statistical and systematic uncertainties, is the approximating function that depends from the corresponding parameters α, β and so on. Uncertainties of parameters are defined by the matrix and uncertainties of the approximating function are defined by the matrix . .

  3. Experimental data on the total cross section of Th-232 in comparison with the recent evaluations

  4. Evaluated uncertainties for the total cross section of Th-232

  5. Experimental data on the fission cross section of Th-232 in comparison with the recent evaluations

  6. Uncertainties for the fission cross section of Th-232

  7. Experimental data on the prompt nu-bar for Th-232 in comparison with the recent evaluations

  8. Uncertainties of the prompt nu-bar for Th-232

  9. Experimental data on the Th-232(n,gam) cross section in comparison with the recent evaluations

  10. Uncertainties for the Th-232(n,gam) cross section

  11. Experimental data on the inelastic cross section of Th-232 in comparison with the recent evaluations

  12. Uncertainties for the inelastic cross section of Th-232

  13. Experimental data on the total cross section of U-233 in comparison with the recent evaluations

  14. Evaluated uncertainties for the total cross section of U-233

  15. Experimental data on the fission cross section of U-233 in comparison with the recent evaluations

  16. Uncertainties for the U-233(n,f) cross section

  17. Prompt fission-neutron multiplicities for U-233

  18. Uncertainties of the prompt nu-bar for U-233

  19. Experimental data on the U-233(n,gam) cross section in comparison with the recent evaluations

  20. Uncertainties for the U-233(n,gam) cross section

  21. Uncertainties for the inelastic cross section of U-233

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