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1 CN formation cross section in nucleon induced reactions on 238 U Efrem Soukhovitski, JINER Frank Dietrich, LLNL Harm Wienke, Belgonucleaire Roberto Capote,

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Presentation on theme: "1 CN formation cross section in nucleon induced reactions on 238 U Efrem Soukhovitski, JINER Frank Dietrich, LLNL Harm Wienke, Belgonucleaire Roberto Capote,"— Presentation transcript:

1 1 CN formation cross section in nucleon induced reactions on 238 U Efrem Soukhovitski, JINER Frank Dietrich, LLNL Harm Wienke, Belgonucleaire Roberto Capote, IAEA/NDS Vienna, Austria

2 2 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com "Uncertainty and Target Accuracy Assessment for Innovative Systems Using Recent Covariance Data Evaluations", M Salvatores (coordinator), R. Jacquemin (monitor), Tech. Rep. NEA No. 6410 (2008). OECD/NEA WPEC Subgroup 26 Final Report: 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 …

3 3 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive coupled channels OMP Lane consistency

4 4 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (1)

5 5 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (2) RIPL 2409

6 6 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (3) RIPL 2409

7 7 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (4) RIPL 5409

8 8 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (4) RIPL 5409

9 9 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (5)

10 10 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com CN formation cross sections (1)

11 11 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com CN formation cross sections (2)  2%

12 12 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com CN formation cross sections (3)

13 13 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com CN formation cross sections (3)

14 14 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com MSD (deformed and spherical SPLs) ENDF-B7.0, JEFF-3.1.1, JENDL-3.3

15 15 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Impact of MDS+MSC on CN formation

16 16 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com NEW EMPIRE VERSION 3.0 Default input parameters for EMPIRE calculations are obtained from RIPL-2 (IAEA) [1] Nuclear Data Sheets 110 (2009) ?? (accepted)

17 17 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com CONCLUSIONS Existing state-of-the-art coupled-channels neutron OMPs provide CN formation cross sections with small uncertainty (~3%) for E n >4 MeV, more work needed for lower energies; improved neutron emission spectra (MSD+MSC) allow calculating the neutron inelastic scattering to the continuum; current evaluations of neutron inelastic scattering to be revised.

18 18 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive and Lane consistent OMP (4) PR C72 064610 (2005) PR C72 024604 (2005) V iso =10 MeV W iso =23.5 MeV V iso =15.9 MeV W iso =23.5 MeV V iso =21 MeV W iso =29.4 MeV

19 19 2 nd Int. Workshop On Compound Nuclear Reactions and Related Topics, Bordeaux, 5-8 October 2009 Roberto Capote, IAEA Nuclear Data Section e-mail: R.CapoteNoy@iaea.org / Roberto.Capote@yahoo.com Dispersive OMP

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