49-In-115 JAEA EVAL-FEB22 S.Kunieda, A.Ichihara, K.Shibata+ DIST-DEC21 20100316 ----JENDL-5 MATERIAL 4931 -----INCIDENT NEUTRON DATA ------ENDF-6 FORMAT History 09-11 Re-evaluation was performed for JENDL-4.0 10-03 Compiled by S.Kunieda 21-10 JENDL-5b3 revised by N.Iwamoto (MF3,6/MT41) added (MF10/MT4,16,17,22,32,41,103) added and modified (MF10/MT4,16,17,22,32,41,103) QM,QI corrected (MF3/MT1,2,3,4,16,17,22,32,41,103) recalculated 21-11 above 20 MeV, JENDL-4.0/HE 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 and unresolved resonance parameters - Resolved resonance region (MLBW formula): below 2 keV For JENDL-2, parameters were taken from the experiment by Hacken et al./1/ Angular momentum l and spin j were based on the measurement of Corvi and Stefanon/2/. The average radiation width of 0.085 eV was deduced /2/ and applied to the levels whose radiation width was unknown. For JENDL-3, total spin j of some resonances was tentativ- ely estimated with a random number method. For JENDL-4, the data for 29.67 - 2004 eV were replaced with the ones obtained by Frankle et al./3/ J for 39.56 eV was taken from the work of Georgiev et al./4/ Part of J values were taken from the work of Corvi and Stafanon. The remaining J values were estiamted by a random number method. - Unresolved resonance region: 2 keV - 300 keV The parameters were obtained by fitting to the total and capture cross sections calculated by the POD code /5/. The ASREP code /6/ was employed in this evaluation. The unresolved parameters should be used only for self-shielding calculation. Thermal cross sections & resonance integrals at 300 K ---------------------------------------------------------- 0.0253 eV res. integ. (*) (barns) (barns) ---------------------------------------------------------- Total 2.03690E+02 Elastic 2.53816E+00 n,gamma 2.01152E+02 3.20897E+03 ---------------------------------------------------------- (*) Integrated from 0.5 eV to 10 MeV. MF= 3 Neutron cross sections MT= 1 Total cross section Sum of partial cross sections. MT= 2 Elastic scattering cross section The OPTMAN /7/ & POD /5/ calculations. MT= 3 Non-elastic cross section Sum of partial non-elastic cross sections. MT= 4,51-91 (n,n') cross section The OPTMAN /7/ & POD /5/ calculations. MT= 16 (n,2n) cross section MT= 17 (n,3n) cross section MT= 22 (n,na) cross section MT= 28 (n,np) cross section MT= 32 (n,nd) cross section Calculated by the POD code /5/. MT=102 Capture cross section Calculated by the POD code /5/. The value of gamma-ray strength function was set to the recomendation value by Mughabghab /8/. MT=103 (n,p) cross section MT=104 (n,d) cross section MT=105 (n,t) cross section MT=106 (n,He3) cross section MT=107 (n,a) cross section Calculated by the POD code /5/. MT=203 (n,xp) cross section Sum of (n,np) and (n,p) MT=204 (n,xd) cross section Sum of (n,nd) and (n,d) MT=205 (n,xt) cross section MT=206 (n,xHe3) cross section Calculated by the POD code /5/. MT=207 (n,xa) cross section Sum of (n,na) and (n,a) MF= 4 Angular distributions of emitted neutrons MT= 2 Elastic scattering The OPTMAN /7/ & POD /5/ calculations. MF= 6 Energy-angle distributions of emitted particles MT= 16 (n,2n) reaction MT= 17 (n,3n) reaction MT= 22 (n,na) reaction MT= 28 (n,np) reaction MT= 32 (n,nd) reaction Neutron spectra calculated by the POD code /5/. MT= 51-90 (n,n') reaction Neutron angular distributions calculated by OPTMAN /7/ & POD /5/. MT= 91 (n,n') reaction Neutron spectra calculated by the POD code /5/. MT= 203 (n,xp) reaction MT= 204 (n,xd) reaction MT= 205 (n,xt) reaction MT= 206 (n,xHe3) reaction MT= 207 (n,xa) reaction Light-ion spectra calculated by the POD code /6/. MF=12 Gamma-ray multiplicities MT= 3 Non-elastic gamma emission Calculated by the POD code /5/. MF=14 Gamma-ray angular distributions MT= 3 Non-elastic gamma emission Assumed to be isotropic. MF=15 Gamma-ray spectra MT= 3 Non-elastic gamma emission Calculated by the POD code /5/. *************************************************************** * Nuclear Model Calculations with POD Code /5/ * *************************************************************** 1. Theoretical models The POD code is based on the spherical optical model, the distorted-wave Born approximaiton (DWBA), one-component exciton preequilibrium model, and the Hauser-Feshbach-Moldauer statis- tical model. With the preequilibrium model, semi-empirical pickup and knockout process can be taken into account for composite-particle emission. The gamma-ray emission from the compound nucleus can be calculated within the framework of the exciton model. The code is capable of reading in particle transmission coefficients calculated by separate spherical or coupled-channel optical model code. In this evaluation, the OPTMAN code /7/ was employed for neutrons, while the ECIS code /9/ was adopted for charged particles. 2. Optical model & parameters Neutrons: Model: Coupled-channel model based on the rigid-rotor model OMP : Based on the Coupled-channel optical potential /10/ The original Parameters were slightly modified as listed below to give a precise reaction cross sections. ------------------------------------------------------------ - Real-volume term VR0= -3.80E+1 MeV VR1= 2.70E-2 MeV VR2= 1.20E-4 MeV VR3= 3.50E-7 MeV VRLA= 9.49E+1 MeV ALAVR= 4.30E-3 r= 1.21E+0 a= 6.55E-1 - Imaginary-surface term WDBW= 1.35E+1 MeV WDWID= 1.40E+1 MeV ALAWD= 1.40E-2 r= 1.21E+0 a= 6.55E-1 - Imaginary-volume term WCBW= 1.70E+1 MeV WCWID= 1.02E+2 MeV r= 1.21E+0 a= 6.55E-1 - Spin-orbit term VS= 6.27E+0 MeV ALASO= 5.00E-3 WSBW= -3.10E+0 MeV WSWID= 1.60E+2 MeV r= 1.05E+0 a= 5.90E-1 - Isospin coefficients CISO= 2.43E+1 WCISO= 1.80E+1 CCOUL= 9.00E-1 - Deformation parameter Beta2= -1.20E-1 ------------------------------------------------------------ Protons: Model: Spherical OMP : Koning and Delaroche /11/ Deuterons: Model: Spherical OMP : Bojowald et al. /12/ Tritons: Mode: Spherical OMP : Becchetti and Greenlees /13/ He-3: Model: Spherical OMP : Becchetti and Greenlees /13/ Alphas: Model: Spherical OMP : A simplified folding model potential /14/ (The nucleon OMP was taken from Ref./10/.) 3. Level scheme of In-115 ------------------------------------ No. Ex(MeV) J PI CC ------------------------------------ 0 0.00000 9/2 + * 1 0.33624 1/2 - 2 0.59714 3/2 - 3 0.82858 3/2 + 4 0.86413 1/2 + 5 0.93378 7/2 + 6 0.94143 5/2 + 7 1.04150 5/2 - 8 1.07820 5/2 + 9 1.13257 11/2 + * 10 1.19250 3/2 - 11 1.28740 3/2 - 12 1.29059 13/2 + 13 1.34750 5/2 - 14 1.41825 9/2 + 15 1.44878 9/2 + 16 1.46330 7/2 + 17 1.47000 3/2 - 18 1.47850 5/2 + ------------------------------------ Levels above 1.48850 MeV are assumed to be continuous. 4. Level density parameters Energy-dependent parameters of Mengoni-Nakajima /15/ were used ---------------------------------------------------------- Nuclei a* Pair Esh T E0 Ematch Elv_max 1/MeV MeV MeV MeV MeV MeV MeV ---------------------------------------------------------- In-116 14.419 0.000 2.599 0.598 -1.472 4.453 0.290 In-115 13.831 1.119 2.468 0.633 -0.459 5.874 1.478 In-114 14.275 0.000 2.256 0.601 -1.368 4.328 0.642 In-113 16.000 1.129 2.058 0.584 -0.576 5.783 1.191 Cd-115 15.353 1.119 3.119 0.604 -0.907 6.275 0.803 Cd-114 14.703 2.248 2.747 0.629 0.285 7.448 2.465 Cd-113 14.918 1.129 2.940 0.622 -0.905 6.375 1.352 Ag-113 13.626 1.129 3.744 0.689 -1.414 7.329 0.271 Ag-112 14.064 0.000 3.764 0.653 -2.318 5.738 0.018 Ag-111 13.420 1.139 3.581 0.725 -1.706 7.873 1.277 ---------------------------------------------------------- The value of a* for In-113 was slightly changed from the original value. 5. Gamma-ray strength functions M1, E2: Standard Lorentzian (SLO) E1 : Generalized Lorentzian (GLO) /16/ 6. Preequilibrium process Preequilibrium is on for n, p, d, t, He-3, and alpha. Preequilibrium capture is on. References 1) Hacken, G., et al.: Phys. Rev., C10, 1910 (1974). 2) Corvi, F. and Stefanon, M.: Nucl. Phys., A233, 185 (1974). 3) Frankle, C.M. et al.: Phys. Rev., C48, 1601 (1993). 4) Georgiev, G.P. et al.: JINR-E3-95-307, p170 (1995). 5) A.Ichihara et al., JAEA-Data/Code 2007-012 (2007). 6) Y.Kikuchi et al., JAERI-Data/Code 99-025 (1999) [in Japanese]. 7) E.Soukhovitski et al., JAERI-Data/Code 2005-002 (2005). 8) S.F.Mughabghab, "Atlas of Neutron Resonances", Elsevier (2006). 9) J.Raynal, CEA Saclay report, CEA-N-2772 (1994). 10) S.Kunieda et al., J. Nucl. Sci. Technol. 44, 838 (2007). 11) A.J.Koning, J.P.Delaroche, Nucl. Phys. A713, 231 (2003). 12) Bojowald et al., Phys. Rev. C 38, 1153 (1988). 13) F.D.Becchetti,Jr., G.W.Greenlees, "Polarization Phenomena in Nuclear Reactions," p.682, The University of Wisconsin Press (1971). 14) D.G.Madland, NEANDC-245 (1988), p. 103. 15) A.Mengoni, Y.Nakajima, J. Nucl. Sci. Technol. 31, 151 (1994). 16) M.Brink, Ph.D thesis, Oxford University, 1955.