6-C - 0

  6-C -  0 JAERI      EVAL-AUG83 K.SHIBATA                        
 JAERI-M 83-221       DIST-MAY10                       20100301   
----JENDL-4.0         MATERIAL  600                               
-----INCIDENT NEUTRON DATA                                        
------ENDF-6 FORMAT                                               
                                                                  
HISTORY                                                           
83-08  Newly evaluated by K.Shibata                               
       Details of the evaluation are given in ref./1/.            
84-07  Data of mf=4 mt=91 were revised.                           
       Comment was also modified.                                 
85-02  Data of mt=2, 3, 4, 53 of mf=3 were revised above 10.45    
       MeV.  Angular distributions for mt=52, 53 were also        
       revised.                                                   
88-07  Data of mt=1, 3, 4, 52 of mf=3 were revised above 8.3 MeV. 
93-12  JENDL-3.2                                                  
       Inelastic scattering and capture cross sections were       
       reevaluated by K. Shibata (jaeri).                         
       Pseudo levels were generated to reproduce vailable ddx     
       data.                                                      
       The total cross section was replaced with the R-matrix     
       calculation done in ref./1/.                               
       All data were compiled by K. Shibata.                      
       *****  modified parts for JENDL-3.2 ********************   
       (3,1)     R-matrix calcultion/1/.                          
       (3,2)     Total - noelastic                                
       (3,3)     Sum of partial reaction cross sections           
       (3,4)     Sum of (3,51-91)                                 
       (3,51)    Modified by considering experimental data.       
       (3,53),(3,58)                                              
                 Coupled-channel statistical model cal.           
       (3,52),(3,54-57),(3,59-75)                                 
                 Pseudo levels.                                   
       (3,91)    4-body breakup.                                  
       (3,102)   Modified by taking account of p-wave capture.    
       (4,51-91)                                                  
       (5,91)    4-body phase space                               
       (12,102)  Experimental data for 20-200 keV.                
       ********************************************************   
96-01  Adopted in JENDL fusion file                               
96-08  Modification for FENDL-2 (S. Chiba)                        
       (3,2) below 4.8 MeV and (4,2) were taken from              
       FENDL-1 (=ENDF/B-VI) as requested by IAEA-AGM              
       (Karlsruhe, June 1996).                                    
00-09  JENDL-3.3 is based on JENDL/F-99.                          
       ******  modified parts for JENDL-3.3 *******************   
       (1,451)   Modified                                         
       (3,3)     Deleted                                          
       (3,251)   Deleted                                          
       (5,91)    Distributions at threshold were modified.        
                 Interpolation was changed to 22.                 
       (14,102)  NK=10                                            
       The data should be regarded as elemental data.             
       ********************************************************   
10-02  Modified for JENDL-4.0                                     
       ******  modified parts for JENDL-4.0 *******************   
       (1,451)  Modified.                                         
       (3,102)  1/v part was modified.                            
       (4,2)    Data were taken from JENDL-3.2.                   
       ********************************************************   
                                                                  
mf=1          General information                                 
  mt=451   Descriptive data                                       
                                                                  
mf=2          Resonance parameters                                
  mt=151   Scattering radius only.                                
                                                                  
mf=3          Cross sections                                      
           Calculated 2200m/s cross sections and res. integrals   
               2200m/s (b)       res.integ. (b)                   
    total      4.750                 -                            
    elastic    4.746                 -                            
    capture    0.0035              0.0018                         
                                                                  
  mt=1     Sig-t                                                  
        Below 4.8 MeV, the cross sections were obtained to be     
        the sum of non-elastic and elastic for FENDL-2.           
        Above 4.8 MeV, based on the measurements /8/-/10/.        
  mt=2     Sig-el                                                 
        Below 10 eV, sig-el = 4.746 barns.                        
        Above 10 eV, the cross section was obtained by subtracting
        the reaction cross section from the total cross section.  
        **********************************************************
        The cross sections below 4.8 MeV were replaced with those 
        given in FENDL-1.                                         
        **********************************************************
  mt=4     Total inelastic                                        
        Sum of mt=51-75 and 91.                                   
  mt=51    Sig-in  4.44 MeV level                                 
        Based on the experimental data /11,27,30,31/.             
  mt=53,58 Sig-in  7.65 MeV (0+), 9.64 MeV (3-) levels            
        The cross sections were obtained from coupled-channel     
        and statistical model calculations.                       
  mt=52,54-57,59-75  Pseudo levels (n,n'3alpha)                   
        Pseudo levels with an interval of 500 keV were made in    
        order to simulate sequential (n,n') decay (evaporation    
        shape) and 3-body breakup (phase space) leading to        
        (n,n'3alpha).  The sum of the cross sections for pseudo   
        levels and mt=91 is consistent with the measurement/12/   
        except around the threshold energy where the calculated   
        cross sections were enhanced.                             
  mt=91    (n,n'3alpha)                                           
        Contribution from 4-body breakup.  The cross section      
        was adjusted so that the calculated spectrum could give   
        a good fit to experimental data at 14 MeV.                
        Total (n,n')3a cross section is the sum of mt=52-75       
        and 91.                                                   
  mt=102   Capture                                                
        Below 100 eV, 1/v curve.                                  
        Between 100 eV and 5 MeV, s-wave plus p-wave capture      
        by considering the data of Igashira/32/.                  
        Above 5 MeV, the inverse reaction data of Cook /13/ were  
        added.                                                    
        ****** For JENDL-4.0 *************************************
        The normalization of the 1/v part was changed to 3.86 mb  
        at 0.0253 eV /34/.                                        
        **********************************************************
  mt=103   (n,p)                                                  
        Based on the measurement of Rimmer and Fisher /14/.       
  mt=104   (n,d)                                                  
        Calculated with DWBA.                                     
  mt=107   (n,a)                                                  
        Based on the experimental data /15/-/23/.                 
                                                                  
mf=4          Angular distributions of secondary neutrons         
  mt=2                                                            
        Taken from JENDL-3.2.                                     
  mt=51                                                           
        Based on the experimental data /24/-/28//33/.             
  mt=53, 58                                                       
        Based on the experimental data /33/.                      
  mt=52,54-57,59-75                                               
        Isotropic in cm.                                          
  mt=91                                                           
        Isotropic distributions in lab.                           
                                                                  
mf=5          Energy distribution of secondary neutrons           
  mt=91                                                           
        4-body phase space.                                       
                                                                  
mf=12         Photon-production multiplicities                    
  mt=51    (n,n')gamma                                            
        m=1.0                                                     
  mt=102    (n,gamma)                                             
        Based on the measurement of Spilling et al./29/ and       
        of Igashira /32/.                                         
                                                                  
mf=14         Photon angular distributions                        
  mt=51                                                           
        Based on the experimental data of Morgan et al./11/.      
  mt=102                                                          
        Assumed to be isotropic.                                  
                                                                  
References                                                        
 1) Shibata, K.: JAERI-M 83-221 (1983).                           
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 3) Cabe, J. and Cance, M.: CEA-R-4524 (1973)                     
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    (1973) 235.                                                   
 5) Heaton, II, H.T. et al.: Nucl. Sci. Eng. 56 (1975) 27.        
 6) Nishimura, K. et al.: JAERI-M 6883 (1977)                     
 7) Smith, A. et al.: Nucl. Sci. Eng. 70 (1979) 281.              
 8) Lamaze, G.P. et al.: Bull. Am. Phys. Soc. 24 (1979) 862.      
 9) Auchampaugh, G.F. et al.: Nucl. Sci. Eng. 69 (1979) 30.       
10) Cierjacks, S. et al.: Nucl. Instrum. Meth. 169 (1980) 185.    
11) Morgan, G.L. et al.: ORNL-TM-3702 (1972).                     
12) Antolkovic, B. et al.: Nucl. Phys. A394 (1983) 87.            
13) Cook, B.C.: Phys. Rev. 106 (1957) 300.                        
14) Rimmer, E.M. and Fisher, P.S.: Nucl. Phys. A108 (1968) 567.   
15) Chatterjee, M.L. and Sen, B.: Nucl. Phys. 51 (1964) 583.      
16) Huck, A. et al.: J. de Physique C1 (1966) 88.                 
17) Brendle, M. et al.: Z. Naturforsch. 23A (1968) 1229.          
18) Kitazawa, H. and Yamamuro, N.: J. Phys. Soc. Jpn. 26(1969)600.
19) Kardonsky, S. et al.: Phys. Rev. C4 (1971) 840.               
20) Stevens, A.P.: INIS-MF-3596 (1976).                           
21) Retz-Schmidt, T. et al.: Bull. Am. Phys. Soc. 5 (1960) 110.   
22) Verbinski, V.V. et al.: Phys. Rev. 170 (1968) 916.            
23) Obst, A.W. et al.: Phys. Rev. C5 (1972) 738.                  
24) Deconninck, G. and Meulders, J.-P.: Phys. Rev. C1 (1970) 1326.
25) Galati, W. et al.: Phys. Rev. C5 (1972) 1508.                 
26) Velkley, D.E., et al.: Phys. Rev. C7 (1973) 1736.             
27) Haouat, G. et al.: CEA-R-4641 (1975).                         
28) Thumm, M. et al.: Nucl. Phys. A344 (1980) 446.                
29) Spilling, P. et al.: Nucl. Phys. A113 (1968) 395.             
30) Glasgow D.W. et al.: Nucl. Sci. Eng. 61 (1976) 521.           
31) Rogers V.C. et al.: DNA 3495F (1974).                         
32) Igashira M.: private communication (1993).                    
33) Baba M. et al.: JAERI-M 90-025, p.383 (1990).                 
34) Firestone R.B et al.: Proc 2007 Int. Workshop on Compound-    
    Nucleus Reactions and Related Topics, Yosemite 2007, p.26     
    (2007).