32-Ge- 73

 32-GE- 73 KHI        EVAL-MAR94 T.WATANABE                       
                      DIST-MAR02 REV2-JUL01            20010713   
----JENDL-3.3         MATERIAL 3234                               
-----INCIDENT NEUTRON DATA                                        
------ENDF-6 FORMAT                                               
                                                                  
HISTORY                                                           
94-3  Newly evaluated                                             
01-07 Compiled by K.Shibata for JENDL-3.3                         
      *********  modified parts for JENDL-3.3  *******************
      (1,451)       Updated.                                      
      (3,251)       Deleted.                                      
      (4,2)         Transformation matrix deleted.                
      (5,16-91)     INT=22                                        
      ************************************************************
                                                                  
mf=1  General information                                         
  mt=451 Comments and dictionary                                  
                                                                  
mf=2  Resonance parameters                                        
  mt=151 Resolved resonance parameters                            
  Resolved resonance parameters for MLBW formula (below 8.53 keV) 
  Negative energy level parameters were adjusted to reproduce     
  Koesters 2200m/s data/1/.                                       
  Level parameters were evaluated mainly based on Mughabghabs     
  compilation/2/.                                                 
                                                                  
  calculated 2200-m/s cross sections and res. integrals (barns)   
                     2200 m/s               res. integ.           
      total          19.2                      -                  
      elastic         4.8                      -                  
      capture        14.4                     62.3                
                                                                  
mf=3  Neutron cross sections                                      
  Below 8.53keV, resonance parameters were given.                 
  Above 8.53keV, the total, elastic and inelastic scattering, and 
  capture cross sections were calculated with the optical and     
  statistical model code casthy /3/.                              
  Optical model parameters used in casthy calculation were as     
  follows.                                                        
                                                                  
                depth (MeV)       radius(fm)    diffuseness(fm)   
         ----------------------   ------------  ---------------   
     V  = 52.07-0.7434E         , r0 =  5.1155     , a0 =  0.492  
     Ws = 9.997+0.1299E         , rs =  5.897      , as =  0.36   
     Vso= 10.99                 , rso=  6.1436     , aso=  0.65   
                                                                  
  The level scheme was adopted from ENSDF file/4/.                
           no.      energy(MeV)    spin-parity  beta2/beta3       
           gr.       0.0000         9/2 +                         
            1        0.0133         5/2 +       0.17              
            2        0.0667         1/2 -       0.13              
            3        0.0688         7/2 +       0.13              
            4        0.3536         5/2 -       0.13              
            5        0.3640         3/2 -       0.11              
            6        0.3925         3/2 -       0.11              
            7        0.4991         7/2 +       0.11              
            8        0.5015         5/2 +       0.1               
            9        0.5511         5/2 +       0.1               
           10        0.5549         1/2 +       0.1               
           11        0.5976         5/2 -                         
           12        0.6590         9/2 +                         
           13        0.7417         7/2 -                         
           14        0.7770         3/2 +                         
           15        0.8090         5/2 -                         
           16        0.8258        13/2 +                         
           17        0.8680        11/2 +                         
           18        0.8941         1/2 -                         
           19        0.9040         1/2 -                         
           20        0.9155         3/2 +                         
           21        0.9317         5/2 +                         
           22        0.9937        11/2 +                         
           23        1.0260        13/2 +                         
           24        1.0432         3/2 -                         
           25        1.1305         9/2 -                         
           26        1.1319         1/2 -                         
      Levels above 1.14 MeV were assumed to be overlapping.       
                                                                  
  Parameters for the composite level density formula of Gilbert-  
  Cameron were evaluated.                                         
  Spin cut-off parameter c1 was taken as 0.146.                   
                                                                  
                                   Ge- 73      Ge- 74             
                                 --------    --------             
          a (1/MeV)                14.970      13.550             
          spin cut-off param.       9.867       9.473             
          pairing energy (MeV)      1.360       3.240             
          normalization factor    2069.20     1898.60             
          E-joint (MeV)             7.828      10.660             
                                                                  
  The capture cross section were normalized using D0=82 eV and    
  Gg=0.145 eV, adopted from Mughabghabs compilation/2/.           
  Above 1 MeV,direct/semidirect capture cross section normalized  
  to 0.76mb at 14 MeV were added to casthys results/5/.           
                                                                  
  mt=16,17,22,28,32,103,104,105,106,107                           
     (n,2n),(n,3n),(n,na),(n,np),(n,nd),(n,p),(n,d),(n,t),        
     (n,he-3),(n,a)                                               
  were evaluated with modified egnash-2/6/ using f2=1.2 and       
  following optical potential                                     
     neutron   :same as used in casthy                            
     proton    :Perey's omp/7/                                    
     deutron   :Lohr-Haeberli's omp/8/                            
     triton    :Becchetti-Greenless omp/9/                        
     he-3      :Becchetti-Greenless omp/9/                        
     alpha     :Lemos omp/10/                                     
  and normalized to following data.                               
     (n,na)      0.97   mb      systematics/11/                   
     (n,p)      20.7    mb      Konno's exp. data/12/             
     (n,d+np)    4.77   mb      Konno's exp. data/12/             
     (n,t)       0.36   mb      systematics                       
     (n,a)       7.79   mb      systematics                       
                                                                  
mf=4  Angular distributions of secondary neutrons                 
  mt=2,16,17,22,28,32,51-76,91                                    
  Elastic and inelastic scattering cross section,(n,2n),(n,3n),   
  (n,na),(n,np) and (n,nd)                                        
  Angular distributions were calculated with casthy for ela-      
  stically and inelastically scattered neutrons.  The direct      
  inelastic scattering contribution were evaluated with           
  dwucky programm/13/. Deformation parameters used in dwucky      
  calculation were evaluated from compilations/14,15/ and         
  half life data from ensdf and adjusted to reproduce             
  ddx data/16/.                                                   
  As for (n,2n),(n,3n),(n,na),(n,np) and (n,nd),isotropic         
  distributions was assumed.                                      
                                                                  
mf=5  Energy distributions of secondary neutrons                  
  mt=16,17,22,28,32,91                                            
  For (n,2n),(n,3n),(n,na),(n,np),(n,nd) and continum inelastic   
  scattering,secondary neutron energy distributions were          
  calculated with egnash-2.                                       
                                                                  
References                                                        
 1)L. Koester et. al.       Z.Phys. A327,129(1987)                
 2)S.F. Mughabghab et. al., Neutron Cross Section Vol.1 Part A    
                            Academic Press(1981)                  
 3)S. Igarasi, T. Fukahori  JAERI-1321    (1991)                  
 4)Evaluated Nuclear Structural Data File                         
 5)T. Nakagawa              Capdir manual                         
 6)N. Yamamuro              JAERI-M 90-006(1991)                  
 7)F.G. Perey               PR    131, 745(1963)                  
 8)J.M. Lohr, W. Haeberli   NP   A232, 381(1974)                  
 9)F.D. Becchetti  and      Polarization Phenomena in Nuclear     
     G.W. Greenless         Reaction  682(1971) Univ. Wisconsin   
10)O.F. Lemos               Orsay Rep.Ser.A No.136(1972)          
11)R.A. Forrest             AERE-R 12419(1986)                    
12)C. Konno et al           JAERI-1329(1993)                      
13)N. Yamamuro              JAERI-M 88-140(1988)                  
14)S. Raman et al.          AND 42,1(1989)                        
15)R.H. Spear               AND 42,55(1989)                       
16)A. Takahashi et.al.      Oktavian data private com.