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International Atomic Energy Agency Modelling with EMPIRE nuclear reaction code and nuclear data evaluation Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 1 for nuclear power applications , 22-26 Sept.

  1. International Atomic Energy Agency Modelling with EMPIRE nuclear reaction code and nuclear data evaluation Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 1 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  2. OUTLOOK � Background: ND for energy applications � New U-238 evaluation � Nuclear reaction modelling in EMPIRE � Differential data � Integral and quasi-differential data � Nuclear data validation using SPA cross sections and dosimetry libraries � Challenges Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 2 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  3. Do we need another 238 U evaluation? OECD/NEA WPEC Subgroup 26 Final Report: “ ¡ ¡Uncertainty ¡and ¡Target ¡Accuracy ¡Assessment ¡for ¡ Innovative Systems Using Recent Covariance Data Evaluations", M. Salvatores (coordinator), R. Jacqmin (monitor), Technical report NEA No. 6410, OECD 2008. The request for improved cross sections and emission spectra and their accuracies for neutron induced reactions on 238 U is an important issue that emerges in several of cases studied. High accuracy requirements were placed on inelastic cross-sections 238 U(n,inl) in the whole energy range up to 20 MeV … A. Santamarina, ND-2013, target uncertainty 5% (current ~ 15%) Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 3 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  4. Evaluated 235 U(n,f) vs. STD cross section Ratio to IAEA 235 U(n,f) STD IAEA STD 235U(n,f) ± 3 � Uncert [%] 235 U(n,f) SPA( 252 Cf) = 1224 ± 5 ( 0.4% ) (2.4%) Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 4 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  5. DOES EVAL.FISSION AGREES with STDs? ~ 3.6% = 3 � 238 U(n,f) SPA in 252 Cf = 318.5 ( 0.6% ) Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 5 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  6. IAEA TM 2011 A.J. Plompen, T. Kawano and RC, Technical report INDC(NDS)-0597 ( IAEA,Vienna,2012) http://www-nds.iaea.org/publications/indc/indc-nds-0597.pdf Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 6 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  7. IAEA TM recommendations 238 U(n,inl) 238 U(n,f) and 238 U(n, � ) – fitted in STD 238 U(n, γ) SPA in 252 Cf: 67.5 ± 0.7 mb (1.0%) 238 U(n,f) SPA in 252 Cf: 318.5 ± 2.1 mb (0.6%) 238 U is the ideal test nucleus for elastic/inelastic studies A.J. Plompen, T. Kawano and RC, Technical report INDC(NDS)-0597 ( IAEA,Vienna,2012) http://www-nds.iaea.org/publications/indc/indc-nds-0597.pdf Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 7 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  8. First problem: Elastic and inelastic cross sections Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 8 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  9. DISCREPANCIES in 238 U(n,inl) Discrete Lev. Continuum ~ 1.3 MeV Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 9 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  10. DISCREPANCIES in 238 U(n,inl) 10 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  11. Nuclear Data Sheets 108 (2007) 2655 + recent relevant modelling advances � Dispersive Lane consistent coupled-channel OMPs * : neutron inelastic scattering to discrete levels; � DIR-CN interference effects (as predicted by Moldauer); � neutron inelastic scattering treatment; � improved fission formalism (descriptive capability) * J.M. Quesada et al. , EPJ Web of Conferences 42 02005 (2013) J.M. Quesada et al. , ND2013 conference Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org 11 for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  12. Nuclear Data Sheets 108 (2007) 2655 + recent relevant modelling advances � Dispersive Lane consistent coupled-channel OMPs * : neutron inelastic scattering to discrete levels; � DIR-CN interference effects (as predicted by Moldauer); � neutron inelastic scattering treatment; � improved fission formalism (descriptive capability) * J.M. Quesada et al. , EPJ Web of Conferences 42 02005 (2013) J.M. Quesada et al. , ND2013 conference 12 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  13. DCCOMP: rigid rotor with soft-rotor corrections 238 U 13 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  14. nonelastic cross sections � R � R - � 2+ - � 4+ 14 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  15. 238 U(n,el) 238 U(n,scatt) 14.1 MeV 10.0 MeV 9.06 MeV 8.10 MeV 7.50 MeV 5.90 MeV 5.50 MeV 3.40 MeV 4.50 MeV 2.50 MeV 1.50 MeV 0.72 MeV 15 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  16. Impact of octupolar band 16 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  17. Inelastic angular distributions E n =1.5 MeV 3 - 732 keV 1 - 680 keV 4 + 148 keV 2 + 45 keV 17 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  18. total (and 1 st lev ) inelastic cross sections DCCOMP + mult. band coupling CN-DIR Interf. 18 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  19. Nuclear Data Sheets 108 (2007) 2655 + recent relevant modelling advances � Dispersive Lane consistent coupled-channel OMPs * : neutron inelastic scattering to discrete levels; � DIR-CN interference effects (as predicted by Moldauer); � neutron inelastic scattering treatment; � improved fission formalism (descriptive capability) * J.M. Quesada et al. , EPJ Web of Conferences 42 02005 (2013) J.M. Quesada et al. , ND2013 conference 19 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  20. new physics: DIR-CN interference 3000 Engelbrecht-Weidenmuller dir-CN interference elastic transformation [1] st level (44.9) 1 2500 nd level (148) 2 (n,el) cross sections [mb] no interference elastic 2000 st level (44.9) 1 nd level (148) 2 1500 (n,n 1 ) 1000 500 0.1 1 energy [MeV] [1 ] ¡C.A. ¡Engelbrecht, ¡H.A. ¡Weidenmuller, ¡“Hauser --Feshbach theory and Ericson fluctuations ¡in ¡the ¡presence ¡of ¡direct ¡reactions”, ¡Phys.Rev. ¡ C8 (1974) 859-862 20 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  21. Nuclear Data Sheets 108 (2007) 2655 + recent relevant modelling advances � Dispersive Lane consistent coupled-channel OMPs * : neutron inelastic scattering to discrete levels; � DIR-CN interference effects (as predicted by Moldauer); � neutron inelastic scattering treatment; � improved fission formalism (descriptive capability) * J.M. Quesada et al. , EPJ Web of Conferences 42 02005 (2013) J.M. Quesada et al. , ND2013 conference 21 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  22. elastic � -bar (P1 component) 22 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  23. Elastic angular distribution 720 keV impact on reflectors 23 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

  24. Neutron emission spectra (2-6 MeV) 6.02 MeV 4.25 MeV 2.03 MeV 24 Joint ICTP-IAEA Workshop on Nuclear Reaction Data Roberto Capote, r.capotenoy@iaea.org for nuclear power applications , 22-26 Sept. 2014, Trieste IAEA Nuclear Data Section

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