22-Ti- 50

 22-TI- 50 KUR        EVAL-SEP88 K.KOBAYASHI(KUR),HASHIKURA(TOK)  
                      DIST-MAR02 REV3-DEC01            20011226   
----JENDL-3.3         MATERIAL 2237                               
-----INCIDENT NEUTRON DATA                                        
------ENDF-6 FORMAT                                               
                                                                  
HISTORY                                                           
88-09  Compiled by T.Asami(nedac)                                 
93-11  JENDL-3.2                                                  
       Data were mainly adopted from JENDL fusion file.           
       Compiled by T.Nakagawa                                     
00-03  Reevaluation was made by T.Asami.                          
01-07  Compiled by K.Shibata (ndc/jaeri)                          
                                                                  
     *****   modified parts for JENDL-3.3   ********************  
      (2,151)              modified                               
      (3,2)                re-calculated                          
      (3,102,107)          revised                                
      (3,104,105,106,203,207)  evaluated newly                    
      (3,251)              deleted                                
      (4,2)                revised                                
      (4,16,22,28,91)      deleted                                
      (5,16,22,28,91)      deleted                                
      (6,16,22,28,91)      taken from JENDL fusion file           
      (6,203, 207)         taken from JENDL fusion file           
      (12,16-107)          evaluated newly                        
      (14,16-107)          isotropic distributions                
      (15,16-107)          evaluated newly                        
     ***********************************************************  
                                                                  
                                                                  
mf=1  General information                                         
 mt=451  Descriptive data and dictionary                          
                                                                  
mf=2  Resonance parameters                                        
 mt=151  Resolved resonance parameters                            
   Resolved parameters for MLBW formula were given in the energy  
   region from 1.0e-5 eV to 300 keV.  Parameters were taken from  
   ref./5/, for positive resonances.  Parameters for negative     
   resonance were obtained so that the reproduced cross sections  
   for both scattering and capture gave the 2200 m/s value of     
   3.7+-0.3 and 0.179+-0.003 barns, respectively/5/.  The         
   scattering radius was assumed to be 4.5 fermi.  Calculated 2200
   m/sec cross sections and resonance integrals are as follows:   
                                                                  
            2200 m/s cross section(b)     res. integral(b)        
    elastic        3.74                                           
    capture        0.18                     0.088                 
    total          3.92                                           
                                                                  
mf=3  Neutron cross sections                                      
  Below 300 keV, no background cross section was given.           
                                                                  
  The calculation with sincros-ii system/2/ was made by adopting  
  Walter-Guss omp modified by Yamamuro/2/ for neutron, Perey omp  
  /6/ for proton, Lemos omp modified by Arthur and Young/7/       
  for alpha, Lohr-Haeberli omp/8/ for deuteron, Becchettii-       
  Greenlees omp/9/ for triton and He-3, and standard level        
  density parameters of sincros-ii system.                        
                                                                  
 mt=1 Total                                                       
   Below 300 keV, created from the resonance parameters.          
   Above 300 keV, optical and statistical model calculation was   
   made with the casthy code/10/.                                 
   The optical potential parameters used are:                     
         V = 50.75 - 0.120*En,    Vso = 4.72   (MeV)              
        Ws = 10.9 - 0.234*En,      Wv = 0.0    (MeV)              
         r = 1.26,   rs = 1.02,   rso = 1.16    (fm)              
         a = 0.52,  aso = 0.52,     b = 0.40    (fm)              
                                                                  
 mt=2 Elastic scattering                                          
   Obtained by subtracting the sum of the partial cross sections  
   from the total cross section.                                  
                                                                  
 mt=4, 51-61, 91 Inelastic scattering                             
   The cross sections were taken from JENDL fusion file.  The     
   level scheme was based on ref./4/  Contributions of the        
   direct process were calculated for the levels marked with '*', 
   using deformation parameters compiled by Raman et al./11/ and  
   Spear/12/.                                                     
                                                                  
           no.      energy(MeV)    spin-parity (direct process)   
          g.s.      0.0                0 +                        
            1       1.5538             2 +         *              
            2       2.6749             4 +         *              
            3       3.1987             6 +         *              
            4       3.771              2 +                        
            5       3.8681             0 +                        
            6       3.9748             4 +                        
            7       4.1473             4 +         *              
            8       4.1718             3 +                        
            9       4.1723             2 +         *              
           10       4.311              2 +         *              
           11       4.4105             3 -         *              
  Levels above 4.411 MeV were assumed to be overlapping.          
                                                                  
 mt=16, 22, 28, 103 (n,2n), (n,na),(n,np), (n,p)                  
    Adopted from JENDL fusion file.  theoretical calculation was  
    made with sincros-ii.  The results were normalized to         
                                                                  
         (n,2n) 1.0    b at 14.9 MeV (systematics by Kasugai/13/),
         (n,p) 0.0134 b at 14.94 MeV measured by Ikeda et al./14/,
                                                                  
 mt=102      Capture                                              
    Below 300 keV, created from the resonance parameters.         
    Above 300 keV, calculated with the casthy code/10/ and        
    Normalized to 2.3 mb at 25 keV. Added the semidirect component
    calculated with  the quick  gnash code/17,18/.                
                                                                  
 mt=107     (n,a)                                                 
    Obtained from from the sincros-ii calculation made with the   
    the egnash code/2/.                                           
                                                                  
mf=4  Angular distributions of secondary neutrons                 
 mt=2                                                             
    Calculated with the casthy code/10/,newly for JENDL-3.3.      
 mt=51-61                                                         
    Taken from JENDL fusion file/1/.                              
    Calculated with the casthy code/10/.                          
                                                                  
mf=6  Energy-angle distributions of secondary particles           
    Taken from JENDL fusion file/1/.                              
      -  Energy distributions of secondary neutrons were replaced 
         by those calculated by egnash2.  The ddx's of the        
         continuum neutrons were calculated by Kumabe's systema-  
         tics /3/ using f15tob /1/.  The precompound/compound     
         ratio was calculated by the sincros-ii code system/2/.   
 mt=16, 22, 28, 91                                                
    Based on modified kumabe's systematics/3/.                    
 mt=203, 207                                                      
    Based on kalbach's 1988 systematics/15/.                      
                                                                  
mf=12  Photon production multiplicities and transition probability
         arrays                                                   
 mt=16, 22, 28, 51-61, 91,103, 104, 107                           
      mt=51-61 were given as the transition probability arrays.   
     mt=16, 22, 28, 91, 102, 103, 104, 107 were calculated with   
     the egnash code/2/ and processed by the gamfil2 code/16/.    
     mt=102 was calculated with the casthy code/10/.              
                                                                  
mf=14  Photon angular distributions                               
 mt=16, 22, 28, 51-61, 91, 102, 103, 104, 107                     
     Assumed to be isotropic distributions                        
                                                                  
mf=15  Continuous photon energy spectra                           
 mt=16, 22, 28, 91, 103, 104, 107                                 
     Calculated with the egnash code/2/.                          
 mt=102                                                           
     Calculated with the casthy code/10/.                         
                                                                  
                                                                  
References                                                        
 1) Chiba, S. et al.: JAERI-M 92-027, p.35 (1992).                
 2) Yamamuro, N.: JAERI-M 90-006 (1990).                          
 3) Kumabe, I. et al.: Nucl. Sci. Eng., 104, 280 (1990).          
 4) ENSDF: Evaluated Nuclear Structure Data File, BNL/NNDC.       
 5) Mughabghab, S.F. et al. : " Neutron Cross Sections ", Vol.1,  
    Part a (1981).                                                
 6) Perey, F.G.: Phys. Rev., 131, 745 (1963).                     
 7) Arthur, E.D. and Young, P.G.: LA-8626-MS (1980).              
 8) Lohr, J.M. and Haeberli W.: Nucl. Phys., A232, 381 (1974).    
 9) Becchetti, F.D. Jr. and Greenlees G.W.: "Polarization         
    Phenomena in Nucl. Reactions," Univ. Wisconsin Press, p.682   
    (1971).                                                       
10) Igarasi, S. and Fukahori, T.: JAERI 1321 (1991).              
11) Raman, S., et al.: Atom. Data and Nucl. Data Tables 36, 1     
    (1987)                                                        
12) Spear, R.H.: Atom. Data and Nucl. Data Table, 42, 55 (1989).  
13) Kasugai, Y.: private communication (1993).                    
14) Ikeda, Y. et al.: JAERI 1312 (1988).                          
15) Kalbach C. : Phys. Rev. C37, 2350(1988).                      
16) Hida K.: JAERI-M 86-150 (1986) (in Japanese).                 
17) Young P.G. et al. : LA-12343-MS (1992).                       
18) Koning A.J. and Delaroche J.P. : ECN-RX-98-015 (1998).