New evaluation of d+Li data up to 50 MeV for IFMIF P. Pereslavtsev, U. Fischer Association FZK-Euratom Forschungszentrum Karlsruhe, Germany Technical Meeting on International Fusion Materials Irradiation Facility Forschungszentrum Karlsruhe, 4-6 October 2005 Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October History   1998 – FZK (P. Wilson) simple evaporation model; Serber stripping model; experimental data for thick target at 32 MeV analytical formulas used in MCNP source subroutine (McDeli)   1999 – INPE-FZK analytical formulas for deuteron elastic scattering; optical model potentials; intranuclear cascade model; Serber stripping model; experimental data for thick target at 32 MeV ENDF-6 formatted files for deuteron energies up to 50 MeV new source subroutine for MCNP based on NJOY processed files   2001 – FZK revisions of INPE evaluated data based on experimental data for thick targets at 32 and 40 MeV   2004 – FZK revisions of INPE evaluated data (new deuteron elastic scattering data based on phenomenological OMP from 1 to 50 MeV)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Status of d+Li data (E d =17 MeV)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Status of d+Li data (E d =40 MeV)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Background and goals   The neutron source for IFMIF is based on d+Li reactions;   Available high energy general purpose d+Li data files fail in description of the experimental data;   General purpose deuteron cross section data files have to cover energies up to 50 MeV;   Data should include particle and photons emission spectra to enable nuclear heating calculations;   Data files should be ENDF-6 formatted for processing with the standard NJOY99 code.

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Flowchart of the evaluation process EvaporationPreequilibrium StrippingDirect Serbermodel DWUCK Neutron spectra processing GNASH ECIS95

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Optical model calculations DEUTERONS NEUTRONS PROTONS TRITONS ALPHAS 1  Ed  50 MeV, M. Avrigeanu, local for 6 Li and 7 Li 0.01  E n  12 MeV, S. Chiba, for 6 Li, modified 12  E n  70 MeV, A. Koning & Delaroche, modified 0.1  E p  50 MeV, Beccheti & Greenless 0.1  E t  50 MeV, Beccheti & Greenless 0.1  E   70 MeV, V. Avrigeanu & Hodgson

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Deuteron OMP (reaction cross-section)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Deuteron OMP (elastic scattering)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Neutron OMPs Chiba OMP modifications: V r =V 0 e - (E-E f ) +V 1 energy dependent Koning OMP modifications: r Wd and a Wd – 20 % less

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Neutron OMP (elastic scattering)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October The use of GNASH code   Hauser-Feshbach statistical model for equilibrium;   Exciton preequlibrium model by Kalbach;   Transmission coefficients prepared by ECIS96 (DWBA);   Gilbert-Cameron level density form;   Nuclear structure data from RIPL-2 collection;   Kalbach systematics for secondary particle angular distributions

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Level scheme used for 7 Li(d,n) 8 Be calculations E level (MeV)Q (MeV)Parity  (MeV) level 1 level 2 “level” 3 level 4 level 5

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Level scheme used for 6 Li(d,n) 7 Be calculations E level (MeV)Q (MeV)Parity  (MeV) / / / / / / / / / level 1 level 3 level 1

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Direct reactions (angular distributions)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Neutron spectra calculations (E d =17 MeV)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Neutron spectra calculations (E d =40 MeV)

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Results of the evaluation

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Benchmark calculations

Technical Meeting on IFMIF, Forschungszentrum Karlsruhe, October Conclusions Complete Complete evaluated deuteron general purpose files prepared for lithium isotopes 6 Li and 7 Li, incident energy MeV, the data are stored in MT=2,5 and MF=3 and 6. Processed with standard ENDF-6 format checkers Processed with NJOY99 system Tested by MCNP4C benchmark calculations