38-Sr- 88 JAEA EVAL-Apr21 N.Iwamoto DIST-DEC21 20210401 ----JENDL-5 MATERIAL 3837 -----INCIDENT NEUTRON DATA ------ENDF-6 FORMAT History 21-04 Evaluated with CCONE code by N.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 and unresolved resonance parameters Resolved resonance region (MLBW formula): below 300 keV Resolved resonance parameters were taken from the work of Koehler et al./1/ The new evaluation does not contains the resonances at 2.780 keV and 12.70 keV which existed in JENDL-3.3. The former resonance, which were observed only by Adamchuk et al./2/, is possibly attributed to Sr-87. A negative resonance was added so as to reproduce the thermal capture cross section recommended by Mughabghab. /3/ Unresolved resonance region: 300 keV - 1 MeV The unresolved resonance paramters (URP) were determined by ASREP code /4/ so as to reproduce the evaluated total and capture cross sections. The unresolved parameters should be used only for self-shielding calculation. Thermal cross sections and resonance integrals at 300 K ---------------------------------------------------------- 0.0253 eV res. integ. (*) (barns) (barns) ---------------------------------------------------------- Total 5.59943E+00 Elastic 5.59363E+00 n,gamma 5.80220E-03 2.36352E-02 ---------------------------------------------------------- (*) Integrated from 0.5 eV to 10 MeV. MF= 3 Neutron cross sections MT= 1 Total cross section Calculated with CCONE code /5/. MT= 2 Elastic scattering cross section Calculated with CCONE code /5/. MT=4,51-91 (n,n') cross section Calculated with CCONE code /5/. MT= 5 Total reaction (except fission) cross section Calculated with CCONE code /5/. MT= 16 (n,2n) cross section Calculated with CCONE code /5/. MT= 17 (n,3n) cross section Calculated with CCONE code /5/. MT= 22 (n,na) cross section Calculated with CCONE code /5/. MT= 28 (n,np) cross section Calculated with CCONE code /5/. MT=102 Capture cross section Calculated with CCONE code /5/. MT=103,600-649 (n,p) cross section Calculated with CCONE code /5/. MT=104,650-699 (n,d) cross section Calculated with CCONE code /5/. MT=105,700-749 (n,t) cross section Calculated with CCONE code /5/. MT=106,750-799 (n,He3) cross section Calculated with CCONE code /5/. MT=107,800-849 (n,a) cross section Calculated with CCONE code /5/. MF= 4 Angular distributions of secondary particles MT= 2 Elastic scattering Calculated with CCONE code /5/. MF= 6 Energy-angle distributions of emitted particles MT= 5 Total reaction (except fission) reaction Calculated with CCONE code /5/. MT= 16 (n,2n) reaction Calculated with CCONE code /5/. MT= 17 (n,3n) reaction Calculated with CCONE code /5/. MT= 22 (n,na) reaction Calculated with CCONE code /5/. MT= 28 (n,np) reaction Calculated with CCONE code /5/. MT=51-91 (n,n') reaction Calculated with CCONE code /5/. MT=102 Capture reaction Calculated with CCONE code /5/. MT=600-649 (n,p) reaction Calculated with CCONE code /5/. MT=650-699 (n,d) reaction Calculated with CCONE code /5/. MT=700-749 (n,t) reaction Calculated with CCONE code /5/. MT=750-799 (n,He3) reaction Calculated with CCONE code /5/. MT=800-849 (n,a) reaction Calculated with CCONE code /5/. 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= 28 (n,np) reaction Decay chain is given in the decay data file. MT=102 Capture reaction Decay chain is given in the decay data file. MT=103 (n,p) reaction Decay chain is given in the decay data file. MT=104 (n,d) 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=106 (n,He3) reaction Decay chain is given in the decay data file. MT=107 (n,a) reaction Decay chain is given in the decay data file. MF=10 Nuclide production cross sections MT= 16 (n,2n) reaction Calculated with CCONE code /5/. MT=105 (n,t) reaction Calculated with CCONE code /5/. MT=107 (n,a) reaction Calculated with CCONE code /5/. ------------------------------------------------------------------ nuclear model calculation with CCONE code /5/ ------------------------------------------------------------------ * Optical model potentials neutron : S.Kunieda et al/6/ modified proton : A.J.Koning and J.P.Delaroche/7/ modified deuteron: Y.Han et al./8/ triton : folding OMP, A.J.Koning and J.P.Delaroche/7/ He-3 : Y.Xu et al./9/ alpha : L.McFadden and G.R.Satchler/10/ modified * Level scheme of Sr-88 ----------------------- No. Ex(MeV) J PI ----------------------- 0 0.000000 0 + 1 1.836090 2 + 2 2.734130 3 - 3 3.152000 0 + 4 3.218510 2 + 5 3.378100 1 + 6 3.486560 1 + 7 3.522940 2 + 8 3.584780 5 - 9 3.635120 2 + 10 3.952640 5 - 11 3.993000 2 - 12 4.019640 6 - 13 4.035600 2 + 14 4.039070 2 + 15 4.170420 3 - 16 4.171000 6 + 17 4.224100 2 + 18 4.226600 1 - 19 4.227240 2 + 20 4.268730 2 + 21 4.299650 4 + 22 4.355000 5 - 23 4.367890 7 - 24 4.413960 2 + 25 4.440790 3 + 26 4.452020 4 + 27 4.485000 0 + 28 4.514030 2 - 29 4.514540 3 - 30 4.521390 6 + 31 4.556000 2 - 32 4.613800 2 + 33 4.632000 2 + 34 4.645000 5 - 35 4.687330 7 + 36 4.742560 1 - 37 4.771600 2 + 38 4.798000 0 + 39 4.801300 1 + 40 4.845630 3 - ----------------------- * Level density parameters (Gilbert-Cameron model/11/) Energy dependent parameters of Mengoni-Nakajima/12/ were used. --------------------------------------------------------- a* Pair Eshell T E0 Ematch Elv_max 1/MeV MeV MeV MeV MeV MeV MeV --------------------------------------------------------- Sr-89 11.246 1.400 -0.953 0.630 1.505 3.412 3.751 Sr-88 10.482 2.558 -1.514 0.855 1.632 6.863 4.846 Sr-87 10.428 1.287 -0.027 0.925 -0.609 7.203 3.007 Sr-86 11.667 2.588 0.762 0.781 0.918 7.404 3.556 Rb-88 10.956 0.000 -0.440 0.906 -1.857 5.930 1.374 Rb-87 11.777 1.287 -0.782 0.782 0.223 5.670 2.555 Rb-86 10.093 0.000 0.004 0.930 -1.736 5.718 1.558 Kr-87 11.350 1.287 -0.117 0.819 -0.174 6.207 2.863 Kr-86 11.667 2.588 -0.512 0.711 1.970 5.975 4.194 Kr-85 10.901 1.302 0.713 0.809 -0.204 6.032 2.637 Kr-84 9.655 2.619 1.222 0.995 -0.055 9.331 3.476 Kr-83 11.337 1.317 2.368 0.768 -0.737 6.210 1.781 --------------------------------------------------------- * Gamma-ray strength functions for Sr-89 E1: hybrid model(GH)/13/ ER= 16.73 (MeV) EG= 5.65 (MeV) SIG= 176.67 (mb) M1: standard lorentzian model(SLO) ER= 9.18 (MeV) EG= 4.00 (MeV) SIG= 1.16 (mb) E2: standard lorentzian model(SLO) ER= 14.11 (MeV) EG= 5.04 (MeV) SIG= 1.92 (mb) References 3) S.F.Mughabghab, "Atlas of Neutron Resonances", Elsevier (2006). 4) Kikuchi,Y. et al.: JAERI-Data/Code 99-025 (1999) [in Japanese] 5) O.Iwamoto, J. Nucl. Sci. Technol., 44, 687 (2007) 6) S.Kunieda et al., J. Nucl. Sci. Technol. 44, 838 (2007) 7) A.J.Koning and J.P.Delaroche, Nucl. Phys. A713, 231 (2003) 8) Y.Han et al., Phys. Rev. C 74,044615(2006) 9) Y.Xu et al., Sci. China, Phys. Mech. & Astron., 54[11], 2005 10) L.McFadden and G.R.Satchler, Nucl. Phys. 84, 177 (1966) 11) A. Gilbert and A.G.W. Cameron, Can. J. Phys, 43, 1446 (1965) 12) A. Mengoni and Y. Nakajima, J. Nucl. Sci. Technol., 31, 151 (1994) 13) S. Goriely, Phys. Lett. B436, 10 (1998)