51-Sb-124 JNDC       EVAL-MAR90 JNDC FP NUCLEAR DATA W.G.        
                      DIST-MAY10                       20091208   
----JENDL-4.0         MATERIAL 5134                               
-----INCIDENT NEUTRON DATA                                        
------ENDF-6 FORMAT                                               
   JENDL-3.3 data were automatically transformed to JENDL-4.0.    
   JENDL-3.2 data were automatically transformed to JENDL-3.3.    
    Interpolation of spectra: 22 (unit base interpolation)        
    (3,251) deleted, T-matrix of (4,2) deleted, and others.       
84-10 Evaluation for JENDL-2 was made by JNDC FPND W.G./1/        
90-03 Modification for JENDL-3 was made/2/.                       
mf = 1  General information                                       
  mt=451 Comments and dictionary                                  
mf = 2  Resonance parameters                                      
  mt=151 Resolved and unresolved resonance parameters             
  No resolved resonance parameters                                
  Unresolved resonance region : 2.54 eV - 100 keV                 
    The neutron strength function, S0, was estimated from those of
    other Sb isotopes, and S1 and S2 were calculated with optical 
    model code CASTHY/3/.  The observed level spacing was         
    determined to reproduce the capture cross section calculated  
    with CASTHY at 100 keV.  The effective scattering radius was  
    obtained from fitting to the calculated total cross section at
    100 keV.                                                      
  Typical values of the parameters at 70 keV:                     
    S0 = 0.300e-4, S1 = 2.700e-4, S2 = 0.760e-4, Sg = 211.e-4,    
    Gg = 0.100 eV, R  = 5.700 fm.                                 
      The unresolved parameters should be used only for           
    self-shielding calculation.                                   
  calculated 2200-m/s cross sections and res. integrals (barns)   
                     2200 m/s               res. integ.           
      total          21.22                     -                  
      elastic         3.776                    -                  
      capture        17.41                    156 (*)             
       (*) Integrated from 0.5 eV to 10 MeV.                      
mf = 3  Neutron cross sections                                    
  Below 2.54 eV, the capture and elastic scattering cross sections
  were assumed to be in 1/v form and constant, respectively.  The 
  capture cross section at 0.0253 eV was taken from the           
  compilation by Mughabghab et al./4/ unresolved resonance        
  parameters were given in the energy range from 2.54 eV to 100   
  Above 100 keV, the spherical optical and statistical model      
  calculation was performed with CASTHY, by taking account of     
  competing reactions, of which cross sections were calculated    
  with PEGASUS/5/ standing on a preequilibrium and multi-step     
  evaporation model.  The OMP's for neutron given in Table 1 were 
  determined to reproduce a systematic trend of the total cross   
  section by changing rso of Iijima-Kawai potential/6/.  The      
  OMP's for charged particles are as follows:                     
     proton   = Perey/7/                                          
     alpha    = Huizenga and Igo/8/                               
     deuteron = Lohr and Haeberli/9/                              
     helium-3 and triton = Becchetti and Greenlees/10/            
  Parameters for the composite level density formula of Gilbert   
  and Cameron/11/ were evaluated by Iijima et al./12/  More       
  extensive determination and modification were made in the       
  present work.  Table 2 shows the level density parameters used  
  in the present calculation.  Energy dependence of spin cut-off  
  parameter in the energy range below E-joint is due to Gruppelaar
  mt = 1  Total                                                   
    Spherical optical model calculation was adopted.              
  mt = 2  Elastic scattering                                      
    Calculated as (total - sum of partial cross sections).        
  mt = 4, 51 - 91  Inelastic scattering                           
    Spherical optical and statistical model calculation was       
    adopted.  The level scheme was taken from Ref./14/.           
           no.      energy(MeV)    spin-parity                    
           gr.       0.0             3  -                         
            1        0.0107          5  +                         
      Levels above 0.041 MeV were assumed to be overlapping.      
  mt = 102  Capture                                               
    Spherical optical and statistical model calculation with      
    CASTHY was adopted.  Direct and semi-direct capture cross     
    sections were estimated according to the procedure of Benzi   
    and Reffo/15/ and normalized to 1 milli-barn at 14 MeV.       
    The gamma-ray strength function (1.97e-02) was determined from
    the systematics of radiation width (0.1 eV) and the average   
    s-wave resonance level spacing (5.08 eV) calculated from the  
    level density parameters.                                     
  mt = 16  (n,2n) cross section                                   
  mt = 17  (n,3n) cross section                                   
  mt = 22  (n,n'a) cross section                                  
  mt = 28  (n,n'p) cross section                                  
  mt = 32  (n,n'd) cross section                                  
  mt = 33  (n,n't) cross section                                  
  mt =103  (n,p) cross section                                    
  mt =104  (n,d) cross section                                    
  mt =105  (n,t) cross section                                    
  mt =107  (n,alpha) cross section                                
    These reaction cross sections were calculated with the        
    preequilibrium and multi-step evaporation model code PEGASUS. 
    The Kalbach's constant k (= 176.9) was estimated by the       
    formula derived from Kikuchi-Kawai's formalism/16/ and level  
    density parameters.                                           
    Finally, the (n,p) and (n,alpha) cross sections were          
    normalized to the following values at 14.5 MeV:               
      (n,p)          3.53  mb (systematics of Forrest/17/)        
      (n,alpha)      1.91  mb (systematics of Forrest)            
  mt = 251  mu-bar                                                
    Calculated with CASTHY.                                       
mf = 4  Angular distributions of secondary neutrons               
  Legendre polynomial coefficients for angular distributions are  
  given in the center-of-mass system for mt=2 and discrete inelas-
  tic levels, and in the laboratory system for mt=91.  They were  
  calculated with CASTHY.  For other reactions, isotropic distri- 
  butions in the laboratory system were assumed.                  
mf = 5  Energy distributions of secondary neutrons                
  Energy distributions of secondary neutrons were calculated with 
  PEGASUS for inelastic scattering from overlapping levels and for
  other neutron emitting reactions.                               
                DEPTH (MEV)       RADIUS(FM)    DIFFUSENESS(FM)   
         ----------------------   ------------  ---------------   
        V  = 47.64-0.473E         R0 = 6.256    A0 = 0.62         
        WS = 9.744                RS = 6.469    AS = 0.35         
        VSO= 7.0                  RSO= 6.241    ASO= 0.62         
TABLE 2  LEVEL DENSITY PARAMETERS                                 
 49-IN-120  *  1.757E+01 6.016E-01 2.330E+01 4.366E+00 0.0        
 49-IN-121     1.601E+01 6.060E-01 1.119E+00 5.277E+00 1.430E+00  
 49-IN-122  *  1.707E+01 5.968E-01 1.737E+01 4.092E+00 0.0        
 49-IN-123     1.470E+01 6.100E-01 1.134E+00 4.483E+00 1.090E+00  
 50-SN-121     1.630E+01 6.100E-01 2.010E+00 5.217E+00 1.190E+00  
 50-SN-122     1.434E+01 7.060E-01 3.423E-01 7.416E+00 2.620E+00  
 50-SN-123     1.509E+01 6.870E-01 3.062E+00 6.032E+00 1.190E+00  
 50-SN-124     1.601E+01 6.160E-01 3.224E-01 6.294E+00 2.280E+00  
 51-SB-122     1.772E+01 5.500E-01 1.346E+01 3.517E+00 0.0        
 51-SB-123     1.585E+01 6.213E-01 1.285E+00 5.469E+00 1.430E+00  
 51-SB-124     1.696E+01 5.600E-01 1.090E+01 3.433E+00 0.0        
 51-SB-125     1.700E+01 5.120E-01 7.883E-01 3.792E+00 1.090E+00  
  syst:  * = ldp's were determined from systematics.              
 Spin cutoff parameters were calculated as 0.146*sqrt(a)*a**(2/3).
 In the CASTHY calculation, spin cutoff factors at 0 MeV were     
 assumed to be 5.0 for Sb-124 and 7.267 for Sb-125.               
 1) Aoki, T. et al.: Proc. Int. Conf. on Nuclear Data for Basic   
    and Applied Science, Santa Fe., Vol. 2, p.1627 (1985).        
 2) Kawai, M. et al.: Proc. Int. Conf. on Nuclear Data for Science
    and Technology, Mito, p. 569 (1988).                          
 3) Igarasi, S.: J. Nucl. Sci. Technol., 12, 67 (1975).           
 4) Mughabghab, S.F. et al.: "Neutron Cross Sections, Vol. I,     
    Part A", Academic Press (1981).                               
 5) Iijima, S. et al.: JAERI-M 87-025, p. 337 (1987).             
 6) Iijima, S. and Kawai, M.: J. Nucl. Sci. Technol., 20, 77      
 7) Perey, F.G: Phys. Rev. 131, 745 (1963).                       
 8) Huizenga, J.R. and Igo, G.: Nucl. Phys. 29, 462 (1962).       
 9) Lohr, J.M. and Haeberli, W.: Nucl. Phys. A232, 381 (1974).    
10) Becchetti, F.D., Jr. and Greenlees, G.W.: Polarization        
    Phenomena in Nuclear Reactions ((Eds) H.H. Barshall and       
    W. Haeberli), p. 682, the University of Wisconsin Press.      
11) Gilbert, A. and Cameron, A.G.W.: Can. J. Phys., 43, 1446      
12) Iijima, S., et al.: J. Nucl. Sci. Technol. 21, 10 (1984).     
13) Gruppelaar, H.: ECN-13 (1977).                                
14) Lederer, C.M., et al.: "Table of Isotopes, 7th Ed.", Wiley-   
    interscience Publication (1978).                              
15) Benzi, V. and Reffo, G.: CCDN-NW/10 (1969).                   
16) Kikuchi, K. and Kawai, M.: "Nuclear Matter and Nuclear        
    Reactions", North Holland (1968).                             
17) Forrest, R.A.: AERE-R 12419 (1986).