6-C - 14 JAEA EVAL-Apr21 N.Iwamoto DIST-DEC21 20210401 ----JENDL-5 MATERIAL 631 -----INCIDENT NEUTRON DATA ------ENDF-6 FORMAT History 21-04 Evaluated with CCONE code by N.Iwamoto MF= 1 General information MT=451 Descriptive data and directory MF= 2 Resonance parameters MT=151 Resolved and unresolved resonance parameters Resolved resonance region (MLBW formula) : below 6.53 MeV The resonance parameters were adopted from Mughabghab /1/ for p- and d-wave resonances and from TENDL-2019 for s-wave resonance (except for the parameters at -2.02 MeV). Scattering radius was taken from CCOM calculation/2/. Thermal cross sections and resonance integrals at 300 K ---------------------------------------------------------- 0.0253 eV res. integ. (*) (barn) (barn) ---------------------------------------------------------- Total 2.79357E+00 Elastic 2.79357E+00 n,gamma 3.08366E-07 1.51833E-05 ---------------------------------------------------------- (*) Integrated from 0.5 eV to 10 MeV. MF= 3 Neutron cross sections MT= 1 Total cross section Calculated with CCONE code /3/. MT= 2 Elastic scattering cross section Calculated with CCONE code /3/. MT=4,51-91 (n,n') cross section Calculated with CCONE code /3/. MT= 5 Total reaction (except fission) cross section Calculated with CCONE code /3/. MT= 16 (n,2n) cross section Calculated with CCONE code /3/. MT= 17 (n,3n) cross section Calculated with CCONE code /3/. MT= 22 (n,na) cross section Calculated with CCONE code /3/. MT=102 Capture cross section Direct and semidirect components were calculated by the method of Minato and Fukui/4/ and were adopted, instead of taking statistical and preequilibrium components. MT=105,700-749 (n,t) cross section Calculated with CCONE code /3/. MT=107,800-849 (n,a) cross section Calculated with CCONE code /3/. MF= 4 Angular distributions of secondary particles MT= 2 Elastic scattering Calculated with CCONE code /3/. MF= 6 Energy-angle distributions of emitted particles MT= 5 Total reaction (except fission) reaction Calculated with CCONE code /3/. MT= 16 (n,2n) reaction Calculated with CCONE code /3/. MT= 17 (n,3n) reaction Calculated with CCONE code /3/. MT= 22 (n,na) reaction Calculated with CCONE code /3/. MT=51-91 (n,n') reaction Calculated with CCONE code /3/. MT=102 Capture reaction Calculated with CCONE code /3/. MT=700-749 (n,t) reaction Calculated with CCONE code /3/. MT=800-849 (n,a) reaction Calculated with CCONE code /3/. MF= 8 Information on decay data MT=4 (n,n') reaction Decay chain is given in the decay data file. MT= 5 Total reaction (except fission) reaction Decay chain is given in the decay data file. MT= 16 (n,2n) reaction Decay chain is given in the decay data file. MT= 17 (n,3n) reaction Decay chain is given in the decay data file. MT= 22 (n,na) reaction Decay chain is given in the decay data file. MT=102 Capture reaction Decay chain is given in the decay data file. MT=105 (n,t) reaction Decay chain is given in the decay data file. MT=107 (n,a) reaction Decay chain is given in the decay data file. ------------------------------------------------------------------ nuclear model calculation with CCONE code /3/ ------------------------------------------------------------------ * Optical model potentials neutron : S.Kunieda et al/5/ modified proton : global OMP, A.J.Koning and J.P.Delaroche/6/ deuteron: folding OMP, A.J.Koning and J.P.Delaroche/6/ triton : folding OMP, A.J.Koning and J.P.Delaroche/6/ He-3 : folding OMP, A.J.Koning and J.P.Delaroche/6/ alpha : V.Avrigeanu/7/ * Level scheme of C-14 ----------------------- No. Ex(MeV) J PI ----------------------- 0 0.000000 0 + 1 6.093800 1 - 2 6.589400 0 + 3 6.728200 3 - 4 6.902600 0 - 5 7.012000 2 + 6 7.341000 2 - 7 8.317900 2 + 8 9.746000 0 + 9 9.801000 3 - 10 10.425000 2 + 11 10.449000 1 - 12 10.498000 3 - 13 10.736000 4 + 14 11.306000 1 + 15 11.395000 1 - 16 11.500000 2 - 17 11.666000 4 - 18 11.730000 5 - 19 11.900000 1 - ----------------------- * Level density parameters (Gilbert-Cameron model/8/) Energy dependent parameters of Mengoni-Nakajima/9/ were used. --------------------------------------------------------- a* Pair Eshell T E0 Ematch Elv_max 1/MeV MeV MeV MeV MeV MeV MeV --------------------------------------------------------- C-15 2.955 3.098 -0.548 2.800 -0.232 18.885 8.559 C-14 3.251 6.414 -2.353 2.815 3.103 26.816 11.900 C-13 2.649 3.328 -4.617 3.442 1.399 30.767 12.140 C-12 4.113 6.928 -5.786 2.398 6.852 30.342 11.828 B-12 2.468 0.000 -1.732 3.555 -4.420 23.413 6.000 Be-11 2.333 3.618 1.035 3.688 -3.708 23.985 7.100 Be-10 2.171 7.589 0.680 3.862 1.050 28.429 10.570 --------------------------------------------------------- * Gamma-ray strength functions for C-15 E1: enhanced generalized lorentzian model(EGLO)/10/ ER= 25.77 (MeV) EG= 12.89 (MeV) SIG= 12.80 (mb) M1: standard lorentzian model(SLO) ER= 16.62 (MeV) EG= 4.00 (MeV) SIG= 2.15 (mb) E2: standard lorentzian model(SLO) ER= 25.55 (MeV) EG= 5.93 (MeV) SIG= 0.24 (mb) References 1) S.F.Mughabghab, "Atlas of Neutron Resonances", Elsevier (2018) 2) F.Minato and T.Fukui, EPJ Web of Conferences, 163, 00037 (2017) 3) O.Iwamoto, J. Nucl. Sci. Technol., 44, 687 (2007) 4) O.Iwamoto, JAERI-Data/Code 2003-020 (2003) 5) S.Kunieda et al., J. Nucl. Sci. Technol. 44, 838 (2007) 6) A.J.Koning and J.P.Delaroche, Nucl. Phys. A713, 231 (2003) 7) V.Avrigeanu, Phys. Rev. C82, 014606 (2010) 8) A. Gilbert and A.G.W. Cameron, Can. J. Phys, 43, 1446 (1965) 9) A. Mengoni and Y. Nakajima, J. Nucl. Sci. Technol., 31, 151 (1994) 10) J. Kopecky et al., Phys. Rev. C 47, 312 (1993)