ENTRY            31542   20050209
SUBENT        31542001   20050209                                 
BIB                 14         34                                 
TITLE      Neutron Capture Cross Section Measurements of          
           109Ag, 186W  and 158Gd on Filtered Neutron Beams       
           of 55 and 144 keV                                      
AUTHOR     (Vuong Huu Tan,Nguyen Canh Hai,Pham Ngoc Son,          
            Tran Tuan Anh)                                        
INSTITUTE  (3VN DAL)                                              
           (3VN VN ) Vietnam Atomic Energy Commission             
REFERENCE  (R,INDC(VN)-011,,2004)                                 
FACILITY   (REAC) Dalat nuclear research reactor. The structures  
           of the filter for 55 keV neutron beam are              
           98cmSi+35g/cm2S+0.2g/cm2B10, and those for 144 keV     
           neutron beam are 98cmSi+1cmTi+0.2g/cm2B10.             
INC-SOURCE (REAC)                                                 
METHOD     (ACTIV,FNB)                                            
DETECTOR   (HPGE) The activities of samples and gold foils were   
           measured with the high resolution and efficiency       
           calibrated HPGe detector, and the samples were placed  
           on the surface of the detector because of their        
           weak activities.                                       
MONITOR    ((MONIT1)79-AU-197(N,G)79-AU-198,,SIG) The results,    
           obtained relative to the standard cross section values 
           of 197Au(n,g)198Au                                     
           ((MONIT2)79-AU-197(N,TOT),,SIG)                        
MONIT-REF  ENDF/B-VI data file for 197Au (MAT=7925),              
           P.G. Young and E.D. Arthur, NDS, IAEA.                 
DECAY-MON  (79-AU-198,2.69D,DG,411.7,0.955)                       
ERR-ANALYS (ERR-T) The experimental uncertainties of the current  
           measurements are 5 to 10%, which are mainly due to:    
            * the statistical errors (0.1 - 10%),                 
            * the uncertainties of gamma-ray detection            
              efficiency (2.0%)                                   
            * the reference cross section value (3.0%).           
STATUS     (TABLE) Data from the reference                        
HISTORY    (20050209C) SD                                         
ENDBIB              34          0                                 
NOCOMMON             0          0                                 
ENDSUBENT           37          0