72-Hf-180

 72-HF-180 NAIG+      EVAL-JUL89 HIDA, YOSHIDA AND SHIBATA(JAERI) 
                      DIST-SEP89 REV2-JAN94                       
----JENDL-3.2         MATERIAL 7243                               
-----INCIDENT NEUTRON DATA                                        
------ENDF-6 FORMAT                                               
HISTORY                                                           
89-07 NEW EVALUATION FOR JENDL-3 WAS MADE BY K.HIDA, T.YOSHIDA    
      (NAIG) AND K.SHIBATA (JAERI).                               
94-01 JENDL-3.2.                                                  
      COMPILED BY T.NAKAGAWA (NDC/JAERI)                          
                                                                  
     *****   MODIFIED PARTS FOR JENDL-3.2   ********************  
      (3,2), (3,4), (3,51-52), (3,56-61)                          
                  CURVES OF INELASTIC SCATTERING CROSS SECTIONS   
                  WERE SMOOTHED BY ADDING INTERPOLATED VALUES AT  
                  SEVERAL ENERGY POINTS.                          
     ***********************************************************  
                                                                  
                                                                  
MF=1  GENERAL INFORMATION                                         
 MT=451  DESCRIPTIVE DATA AND DICTIONARY                          
                                                                  
MF=2  RESONANCE PARAMETERS                                        
 MT=151 RESOLVED AND UNRESOLVED RESONANCE PARAMETERS              
  RESOLVED RESONANCES FOR MLBW FORMULA                            
   ENERGY RANGE            : 1.0E-5 EV TO 2.5 KEV                 
   RES. ENERGIES AND GAM-N : BNL-325 /1/.  IF UNKNOWN, GAM-N IS   
                             CALCULATED FROM D-OBS AND S0, AND IN 
                             THIS CASE, GAM-GAMMA FROM            
                             (GAM-N)*(GAM-GAMMA)/(GAM-TOTAL).     
   GAM-GAMMA               : 0.050 EV ASSUMED IF UNKNOWN.         
   RADIUS                  : 8.0 FM                               
  UNRESOLVED RESONANCES                                           
   ENERGY RANGE            : 2.5 KEV TO 50 KEV.                   
   S0, S1,R AND GAM-GAMMA  : ADJUSTED SO THAT THE CALCULATED TOTAL
                             AND CAPTURE CROSS SECTIONS WERE      
                             REPRODUCED WELL.                     
   RESULTS ARE D-OBS = 158 EV, S0 = 1.90E-4, S1 = 0.44E-4,        
   R = 8.5 FM AND GAM-GAMMA = 0.05 EV.                            
                                                                  
      2200 M/SEC CROSS SECTIONS AND CALCULATED RES. INTEGRALS.    
                    2200 M/SEC    RES. INTEG.                     
          TOTAL       34.2 B         -                            
          ELASTIC     21.2 B         -                            
          CAPTURE     13.0 B        34.1 B                        
                                                                  
MF=3  NEUTRON CROSS SECTIONS                                      
BELOW 50 KEV :                                                    
 NO BACKGROUND WAS GIVEN.                                         
ABOVE 50 KEV :                                                    
 MT=1,2,4,51-61,91,102  TOTAL,ELASTIC,INELASTIC AND CAPTURE       
  CALCULATED WITH ECIS /2/ AND CASTHY /3/.  DEFORMED OPTICAL      
  POTENTIAL FOR ECIS CALCULATION WAS DETERMINED SO AS TO          
  REPRODUCE THE EXPERIMENTAL TOTAL CROSS SECTION OF NATURAL       
  HAFNIUM, STARTING WITH THE HAOUAT POTENTIAL /4/.                
     V0 = 46.60-0.3*EN, WS = 3.70+0.4*EN (EN<10), VSO = 6.2 (MEV),
                             7.70        (EN>10)                  
     A0 = 0.63,         AS = 0.52,                ASO = 0.47 (FM),
     R0 = 1.24,         RS = 1.24,                RSO = 1.12 (FM),
     BETA-2 = 0.256,    BETA-4 = 0.0.                             
  THE DEFORMATION PARAMETER BETA-2 WAS DETERMINED FROM THE        
  MEASURED E2 TRANSITION PROBABILITY DATA /5/.  THE LOWEST THREE  
  LEVELS BELONGING TO THE GROUND STATE ROTATIONAL BAND WERE       
  COUPLED IN THE CALCULATION.  THE SPHERICAL OPTICAL POTENTIAL    
  FOR CASTHY CALCULATION IS THE SAME AS THAT OF JENDL-2.          
     V0 = 38.0, WS = 8.0+0.5*SQRT(EN), VSO = 7.0 (MEV),           
     A0 = 0.47, AS = 0.52            , ASO = 0.47 (FM),           
     R0 = 1.32, RS = 1.32            , RSO = 1.32 (FM).           
  CAPTURE CROSS SECTION WAS NORMALIZED TO THE MEASURED DATA OF    
  BEER ET AL. /6/ AT 30 KEV.  COMPETING PROCESSES (N,2N), (N,3N), 
  (N,P), AND (N,ALPHA) WERE CALCULATED WITH GNASH /7/ AND FED TO  
  ECIS-CASTHY CALCULATION.  THE LEVEL FLUCTUATION AND INTERFERENCE
  EFFECTS WERE CONSIDERED.  LEVEL SCHEME WAS TAKEN FROM TABLE OF  
  ISOTOPES /8/.                                                   
         NO.    ENERGY(MEV)   SPIN-PARITY                         
         G.S.    0.0             0 +                              
          1      0.09332         2 +                              
          2      0.3086          4 +                              
          3      0.6409          6 +                              
          4      1.0839          8 +                              
          5      1.1416          8 -                              
          6      1.1832          4 +                              
          7      1.1997          2 +                              
          8      1.2910          4 +                              
          9      1.3744          3 -                              
         10      1.4092          4 +                              
         11      1.5393          3 -                              
    CONTINUUM LEVELS ASSUMED ABOVE 1.6076 MEV.                    
  THE LEVEL DENSITY PARAMETERS FOR GILBERT AND CAMERON'S FORMULA  
  /9/ ARE THE SAME AS THOSE OF JENDL-2.                           
                 A(1/MEV)   C(1/MEV)  T(MEV)   EX(MEV)  SIGMA**2  
         HF-180    21.37      2.35     0.519     5.42     7.64    
         HF-181    21.91      6.47     0.479     4.08     4.88    
                                                                  
 MT=16,17,103,107  (N,2N), (N,3N), (N,P) AND (N,ALPHA)            
  CALCULATED WITH GNASH /7/. THE TRANSMISSION COEFFICIENTS FOR    
  THE INCIDENT CHANNEL WERE GENERATED WITH ECIS /2/, WHILE THOSE  
  FOR THE EXIT CHANNELS WITH ELIESE-3 /10/.  THE PREEQUILIBRIUM   
  PARAMETER F2 WAS F2=5.0.                                        
                                                                  
 MT=251  MU-BAR                                                   
  CALCULATED WITH ECIS /2/ AND CASTHY /3/.                        
                                                                  
MF=4  ANGULAR DISTRIBUTIONS OF SECONDARY NEUTRONS                 
 MT=2,51-61,91                                                    
  CALCULATED WITH ECIS /2/ AND CASTHY /3/.                        
 MT=16,17                                                         
  ISOTROPIC IN THE LABORATORY SYSTEM.                             
                                                                  
MF=5  ENERGY DISTRIBUTIONS OF SECONDARY NEUTRONS                  
 MT=16,17,91                                                      
  CALCULATED WITH GNASH /7/.                                      
                                                                  
MF=12 PHOTON MULTIPLICITIES AND TRANSITION PROBABILITIES          
 MT=16,17,91,102,103,107                                          
  CALCULATED WITH GNASH /7/ AND STORED UNDER OPTION-1 (PHOTON     
  PRODUCTION MULTIPLICITIES).  THE PHOTON STRENGTH FUNCTIONS FOR  
  MOST NUCLEI WERE TAKEN FROM /1/, WHILE THOSE FOR SOME HAFNIUM   
  ISOTOPES WERE DETERMINED FROM CAPTURE CROSS SECTION NORMALIZA-  
  TION TO THE EXPERIMENTAL DATA.  THE PHOTON PROFILE FUNCTION IS  
  A SUPERPOSITION OF THE BERMAN-TYPE GIANT DIPOLE RESONANCE /11/  
  AND THE PYGMY RESONANCE WHOSE PARAMETER VALUES WERE CITED FROM  
  THE NEIGHBOURING NUCLEUS TA /12/.                               
         EG1 = 15.23,   EG2 = 12.3 ,   EP = 5.2 (MEV),            
         GG1 =  4.48,   GG2 =  2.43,   GP = 2.5 (MEV),            
         SIG-PYGMY/SIG-GDR = 0.0245.                              
                                                                  
 MT=51-61                                                         
  STORED UNDER OPTION-2 (TRANSITION PROBABILITY ARRAY).  DATA WERE
  TAKEN FROM /8/.                                                 
                                                                  
MF=14 PHOTON ANGULAR DISTRIBUTIONS                                
 MT=16,17,51-61,91,102,103,107                                    
  ISOTROPIC.                                                      
                                                                  
MF=15 CONTINUOUS PHOTON ENERGY SPECTRA                            
 MT=16,17,91,102,103,107                                          
  CALCULATED WITH GNASH /7/.                                      
                                                                  
REFERENCES                                                        
 1) MUGHABGHAB S.F.: NEUTRON CROSS SECTIONS, VOL.1, PART B (1984).
 2) RAYNAL J.: IAEA SMR-9/8 (1970).                               
 3) IGARASI S. AND FUKAHORI T.: JAERI 1321 (1991).                
 4) HAOUAT G. ET AL.: NUCL. SCI. ENG., 81, 491 (1982).            
 5) RAMAN S. ET AL.: AT. DATA NUCL. DATA TABLES, 36, 1 (1987).    
 6) BEER H. AND MACKLIN R.L.: PHYS. REV., C26, 1404 (1982).       
 7) YOUNG P.G. AND ARTHUR E.D.: LA-6947 (1977).                   
 8) LEDERER C.M. AND SHIRLEY V.S.: TABLE OF ISOTOPES 7TH EDITION  
    (1979).                                                       
 9) GILBERT A. AND CAMERON A.G.W.: CAN. J. PHYS., 43, 1446 (1965).
10) IGARASI S.: JAERI-1224 (1972).                                
11) BERMAN B.L.: AT. DATA NUCL. DATA TABLES, 15, 319 (1975).      
12) IGASHIRA M. ET AL.: INT. SYMP. CAPTURE GAMMA-RAY SPECROSCOPY  
    AND RELATED TOPICS - 1984, 523 (1985).