16-S - 0

 16-S -  0 FUJI E.C.  EVAL-MAY87 H.NAKAMURA                       
                      DIST-SEP89 REV2-FEB94                       
----JENDL-3.2         MATERIAL 1600                               
-----INCIDENT NEUTRON DATA                                        
------ENDF-6 FORMAT                                               
HISTORY                                                           
87-05  NEWLY EVALUATED BY H.NAKAMURA (FUJI ELECTRIC CO. LTD.)     
87-07  COMPILED BY T.FUKAHORI (JAERI).                            
88-02  MODIFICATIONS ON (N,P) AND INELASTIC SCATTERING CROSS      
      SECTIONS OF S-32. DIRECT INELASTIC COMPONENTS FROM DWBA     
      CALCULATIONS WERE ADDED TO THE COMPOUND COMPONENTS AS TO    
      REPRODUCE DDX DATA OF OKTAVIAN (OSA, 1986).                 
88-08  MODIFIED DUE TO CORRECT S-32 DATA BY T.FUKAHORI (JAERI)    
94-02  JENDL-3.2                                                  
       NEW OPTICAL MODEL CALCULATION WAS PERFORMED BY T. WATANABE 
       (KHI).                                                     
       GAMMA PRODUCTION DATA WERE EVALUATED BY T. ASAMI (DE).     
       DATA WERE COMPILED BY K. SHIBATA (JAERI).                  
       *****  MODIFIED PARTS FOR JENDL-3.2 ******************     
       (3,1),(3,4),(3,51-73),(3,91),(3,251),(4,2),(4,51-73)       
               OPTICAL AND STATISTICAL MODEL CALCULATIONS.        
               CONSTRUCTED FROM ISOTOPIC FILES.                   
       (3,2)   TOTAL - NONELASTIC                                 
       (5,16-91)        SUBSECTIONS COMBINED.                     
       MF=12,13,14,15   GAMMA PRODUCTION DATA                     
       *******************************************************    
                                                                  
 NATURAL SULPHUR DATA CONSTRUCTED FROM S-ISOTOPES.                
                                                                  
MF=1  GENERAL INFORMATION                                         
     MT=451  DESCRIPTIVE DATA AND DICTIONARY                      
                                                                  
MF=2  RESONANCE PARAMETERS                                        
     MT=151  RESOLVED RESONANCES                                  
        RESONANCE REGION : 1.0E-5 EV - 1.57 MEV                   
       THE MULTILEVEL BREIT-WIGNER FORMULA WAS USED. PARAMETERS   
       WERE ADOPTED FROM THE FOLLOWING SOURCES.                   
          S-32 : -10 KEV - 1.57 MEV, R = 3.92 FM                  
          S-33 : -7.1 - 260 KEV, R = 3.85 FM                      
          S-34 : -10 - 480 KEV, R = 3.60 FM                       
                                                                  
       CALCULATED 2200-M/S CROSS SECTIONS AND RES. INTEGRALS.     
                       2200-M/S     RES. INTEG.                   
          ELASTIC      1.024  B         -                         
          CAPTURE      0.514  B        0.2428 B                   
          TOTAL        1.546  B         -                         
                                                                  
MF=3  NEWTRON CROSS SECTIONS                                      
       BELOW 1.57 MEV, BACKGROUND CROSS SECTIONS CONSISTING OF    
       (N,P) AND (N,ALPHA) CROSS SECTIONS WERE GIVEN.             
                                                                  
     MT=1  TOTAL                                                  
       SPHERICAL AND DEFORMED OPTICAL POTENTIAL PARAMETERS        
       WERE DETERMINED SO AS TO REPRODUCE THE EXPERIMENTAL DATA   
       OF CIERJACKS+/1/.  THE SHERICAL POTENTIALS WERE USED IN    
       CALCULATING THE CROSS SECTIONS OF S-32, WHILE THE          
       DEFORMED ONES WERE USED IN CALCULATING THE CROSS SECTIONS  
       OF THE OTHER ISOTOPES. THE ISOTOPIC CALCULATIONS WERE      
       PERFORMED BY USING CASTHY CODE/2/.                         
     MT=2  ELASTIC SCATTERING                                     
       GIVEN AS TOTAL MINUS OTHER CROSS SECTIONS.                 
     MT=4  TOTAL INELASTIC SCATTERING                             
       SUM OF MT=51-73, 91                                        
     MT=16,22,28,103,107                                          
       THE WEIGHTED SUM OF ISOTOPES WAS ADOPTED. THE CROSS        
       SECTIONS OF ISOTOPES WERE CALCULATED USING GNASH CODE/3/.  
     MT=51-73,91  INELASTIC SCATTERING                            
       ISOTOPIC DATA WERE OBTAINED FROM THE CASTHY/2/             
       CALCULATION.  ISOTOPIC LEVELS WERE SORTED WITH ENERGIES.   
       ******************************************************     
       OPTICAL-MODEL POTEMTIAL PARAMETERS USED FOR THE JENDL-3.2  
       EVALUATION:                                                
              V  = 58.83 - 0.5635EN     (MEV)                     
              WS = 3.609 + 0.1819EN     (MEV)                     
              (  = 2.518 + 0.0302EN     (MEV) FOR DEFORMED POT.)  
              VSO= 4.199                (MEV)                     
              R  = 1.306,  A  = 0.452    (FM)                     
              RS = 1.124,  B  = 0.690    (FM)                     
              RSO= 1.010,  ASO= 0.750    (FM).                    
      ********************************************************    
     MT=102  CAPTURE                                              
       ABOVE 1.57 MEV, THE CASTHY/2/ CALCULATION WAS ADOPTED.     
     MT=103(N,P), 107(N,ALPHA)                                    
       FOR S-32 THE EVALUATION WAS MADE ON THE BASIS OF           
       EXPERIMENTAL DATA.  FOR S-33,34,36, THE GNASH/3/           
       CALCULATION WAS ADOPTED.                                   
     MT=251  MU-BAR                                               
       CALCULATED WITH CASTHY/2/.                                 
                                                                  
MF=4  ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS                 
     MT=2,51-73                                                   
       OPTICAL AND STATISTICAL-MODEL CALCULATIONS.                
     MT=16,22,28                                                  
       ASSUMED TO BE ISOTROPIC IN THE LABORATORY SYSTEM.          
     MT=91                                                        
       ISOTROPIC DISTRIBUTIONS IN CM WERE CONVERTED TO THE        
       DISTRIBUTIONS IN LAB.                                      
                                                                  
MF=5  ENERGY DISTRIBUTIONS OF SECONDARY NEUTRONS                  
     MT=16,22,28,91                                               
       CALCULATED WITH GNASH/3/.                                  
                                                                  
MF=12 PHOTON PRODUCTION MULTIPLICITY                              
     MT=102,103,107                                               
       CALCULATED WITH SINCROS-II/4/.                             
                                                                  
MF=13 PHOTON PRODUCTION CROSS SECTION                             
     MT=3                                                         
       CALCULATED WITH SINCROS-II/4/.                             
     MT=4                                                         
       CALCULATED BY TAKING ACCOUNT OF BRANCHING RATIOS.          
                                                                  
MF=14 PHOTON ANGULAR DISTRIBUTION                                 
     MT=3,4,102,103,107                                           
       ASSUMED TO BE ISOTROPIC.                                   
                                                                  
MF=15 PHOTON ENERGY DISTRIBUTION                                  
     MT=3,102,103,107                                             
       CALCULATED WITH SINCROS-II/4/.                             
                                                                  
REFERENCES                                                        
 1) CIERJACKS, S. ET AL.: KFK-1000 (1968)                         
 2) IGARASI, S. : J. NUCL. SCI. TECHNOL., 12, 67 (1975).          
 3) YOUNG, P.G. AND ARTHUR, E.D.: LA-6947 (1977).                 
 4) YAMAMURO, N: JAERI-M 90-006 (1990).