41-Nb- 94 EVAL-Sep18 ichihara DIST-DEC21 20200318 ----JENDL-5 MATERIAL 4128 -----INCIDENT NEUTRON DATA ------ENDF-6 FORMAT History 2018-08 Evaluated with CCONE code by ichihara 2020-10 Energies of discrete primary photons were corrected. 21-11 above 20 MeV, JENDL/ImPACT-2018 merged by O.Iwamoto 21-11 (MF6/MT5) recoil spectrum added by O.Iwamoto MF= 1 General information MT=451 Descriptive data and directory MF= 2 Resonance parameters MT=151 Resolved resonance region : below 40 eV The parameter values were taken from /1/ by Mughabghab and JENDL-3.2. The neutron width for the 22.63 eV resonance was altered on the basis of /1/. MT=151 Unresolved resonance region : 40 eV - 100 keV The unresolved resonance parameters were calculated using the ASREP code/2/. The parameters should be used only for the self-shielding calculation. Thermal cross sections and resonance integrals at 300 K ---------------------------------------------------------- 0.0253 eV res. integ. (*) (barns) (barns) ---------------------------------------------------------- Total 2.135E+01 Elastic 6.440E+00 n,gamma 1.491E+01 1.301E+02 ---------------------------------------------------------- (*) 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= 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= 24 (n,2na) cross section Calculated with CCONE code /3/. MT= 28 (n,np) cross section Calculated with CCONE code /3/. MT= 32 (n,nd) cross section Calculated with CCONE code /3/. MT= 33 (n,nt) cross section Calculated with CCONE code /3/. MT= 41 (n,2np) cross section Calculated with CCONE code /3/. MT=102 Capture cross section Calculated with CCONE code /3/. MT=103,600-649 (n,p) cross section Calculated with CCONE code /3/. MT=104,650-699 (n,d) cross section Calculated with CCONE code /3/. MT=105,700-749 (n,t) cross section Calculated with CCONE code /3/. MT=106,750-799 (n,He3) 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 neutrons MT= 2 Elastic scattering Calculated with CCONE code /3/. MF= 6 Energy-angle distributions of emitted particles 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= 24 (n,2na) reaction Calculated with CCONE code /3/. MT= 28 (n,np) reaction Calculated with CCONE code /3/. MT= 32 (n,nd) reaction Calculated with CCONE code /3/. MT= 33 (n,nt) reaction Calculated with CCONE code /3/. MT= 41 (n,2np) 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=600-649 (n,p) reaction Calculated with CCONE code /3/. MT=650-699 (n,d) reaction Calculated with CCONE code /3/. MT=700-749 (n,t) reaction Calculated with CCONE code /3/. MT=750-799 (n,He3) 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') MT= 16 (n,2n) MT= 17 (n,3n) MT= 22 (n,na) MT= 24 (n,2na) MT= 28 (n,np) MT= 32 (n,nd) MT= 33 (n,nt) MT= 41 (n,2np) MT=102 Capture MT=103 (n,p) MT=104 (n,d) MT=105 (n,t) MT=106 (n,He3) MT=107 (n,a) MF= 9 Isomeric branching ratios MT=102 Capture reaction Below 40 eV, the multiplicity for the metastable state was determined from the thermal cross section of 0.6+/-0.1 b /1/. Above 40 eV, multiplicities were taken from JENDL/AD-2017. MT=107 (n,a) reaction Calculated with CCONE code /3/. MF=10 Nuclide production cross sections MT=4 (n,n') 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= 24 (n,2na) reaction Calculated with CCONE code /3/. ------------------------------------------------------------------ nuclear model calculation with CCONE code /3/ ------------------------------------------------------------------ * Optical model potentials alpha : O.F.Lemos/4/ deuteron: J.M.Lohr and W.Haeberli/5/ He-3 : F.D.Becchetti Jr. and G.W.Greenlees/6/ neutron : A.J.Koning and J.P.Delaroche/7/ proton : A.J.Koning and J.P.Delaroche/7/ triton : F.D.Becchetti Jr. and G.W.Greenlees/6/ * Level scheme of Nb-94 ----------------------- No. Ex(MeV) J PI ----------------------- 0 0.000000 6 + 1 0.040890 3 + 2 0.058710 4 + 3 0.078670 7 + 4 0.113400 5 + 5 0.140300 2 - 6 0.301560 2 - 7 0.311820 5 + 8 0.334100 3 + 9 0.396230 3 - 10 0.450200 3 - 11 0.631530 4 + 12 0.640990 5 + 13 0.666100 3 + 14 0.785660 3 + 15 0.792600 4 + 16 0.816830 3 - 17 0.895650 4 - 18 0.924250 2 + 19 0.932700 7 + 20 0.936040 4 - 21 0.948000 8 - 22 0.957360 5 + 23 0.970160 4 + 24 0.976760 5 + 25 0.979290 2 + 26 0.991300 9 + 27 1.006200 5 + 28 1.010900 4 - 29 1.023350 7 - ----------------------- * 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 --------------------------------------------------------- Nb-95 11.759 1.231 1.721 0.956 -2.918 9.376 0.825 Nb-94 12.822 0.000 0.581 0.720 -1.513 4.482 1.023 Nb-93 11.549 1.244 0.104 1.006 -2.466 9.756 0.810 Nb-92 11.929 0.000 -1.409 0.928 -2.165 6.882 0.501 Zr-94 12.185 2.475 1.414 0.767 0.469 7.586 1.671 Zr-93 12.414 1.244 0.476 0.821 -1.060 7.126 1.018 Zr-92 11.704 2.502 -0.006 0.851 0.532 8.230 2.820 Zr-91 11.890 1.258 -1.233 0.823 0.027 6.228 2.395 Y-93 11.549 1.244 1.580 0.750 -0.351 5.778 1.309 Y-92 11.929 0.000 0.366 0.548 -0.011 1.793 0.992 Y-91 11.338 1.258 0.165 0.854 -0.617 6.824 1.580 Y-90 10.454 0.000 -1.297 0.866 -0.784 4.548 0.954 Y-89 11.127 1.272 -1.867 0.721 1.290 3.964 2.622 --------------------------------------------------------- * Gamma-ray strength functions for Nb-95 E1: generalized lorentzian model(GLO)/10/ ER= 16.48 (MeV) EG= 5.49 (MeV) SIG= 194.73 (mb) M1: standard lorentzian model(SLO) ER= 8.99 (MeV) EG= 4.00 (MeV) SIG= 0.75 (mb) E2: standard lorentzian model(SLO) ER= 13.81 (MeV) EG= 4.97 (MeV) SIG= 2.12 (mb) References 1) Mughabghab, S.F.: "Atlas of Neutron Resonances, 6th Edition, Vol. 1", Elsevier, Amsterdam (2018). 2) Kikuchi, Y., et al.: JAERI-Data/Code 99-025 (1999) [in Japanese]. 3) Iwamoto, O.: J. Nucl. Sci. Technol., 44, 687 (2007). 4) Lemos, O.F.: Orsay, Series A ,No.136 (1972). 5) Lohr, J.M. and Haeberli, W.: Nucl. Phys., A232, 381 (1974). 6) Becchetti Jr., F.D. and Greenlees, G.W.: Ann. Rept. J.H. Williams Lab., Univ. Minnesota (1969). 7) Koning, A.J. and Delaroche, J.P.: Nucl. Phys. A713, 231 (2003). 8) Gilbert, A. and Cameron, A.G.W.: Can. J. Phys., 43, 1446 (1965). 9) Mengoni, A. and Nakajima, Y.: J. Nucl. Sci. Technol., 31, 151 (1994). 10) Kopecky, J. and Uhl, M.: Phys. Rev., C41, 1941 (1990).