ENTRY            O1274   20051002
SUBENT        O1274001   20051002                                 
BIB                 14         46                                 
TITLE      Experimental study and nuclear model calculations on   
           the Os-192(p,n)Ir-192 reaction. Comparison of reactor  
           and cyclotron production of the therapeutic            
           radionuclide Ir-192.                                   
AUTHOR     (K.Hilgers, S.Sudar, S.M.Qaim)                         
INSTITUTE  (2GERJUL)                                              
REFERENCE  (J,ARI,63,93,2005)                                     
HISTORY    (20050513C)                                            
           (20051002U) Last checking has been done.               
SAMPLE     Thin osmium samples were prepared by electrolytic      
           deposition of the enriched Os-192 on 25-mum Ni-foils   
            (99.9% pure) chemical purityof used osmium- 99.9%.    
           Isotopic composition:                                  
           84.5% Os-192,                                          
           15.2% Os-190,                                          
           0.3% Os-189,                                           
           the electrolytic deposit of metallic osmium had a  mass
           between  1  and 4 mg, which was determined by weighing.
           The uniformity of the deposit was checked using a      
           microscope.   Also the absence of all oxides, which are
           coloured, could be confirmed.  A check via proton      
           activation analysis was done, too.                     
ADD-RES    (TTY-C) The integrated yield of Ir-192 was calculated ,
           assuming a 1 hour irradiation with a proton beam of    
           1 microA.                                              
           (COMP) The model codes ALICE-IPPE and EMPIRE-II.       
           A comparison of the reactor and cyclotron production   
           methods is given too.                                  
DETECTOR   (HPGE)                                                 
MONITOR    (22-TI-0(P,X)23-V-48,,SIG)                             
           (29-CU-0(P,X)30-ZN-65,,SIG)                            
MONIT-REF  (,F.TARKANYI+,R,IAEA-TECDOC-1211,49,2001)              
FACILITY   (CYCLO,2GERJUL) The compact cyclotron CV-28.           
METHOD     (STTA)                                                 
           (CHSEP)                                                
           (ACTIV)                                                
ERR-ANALYS (ERR-T) Total uncertainty in measured cross section.   
           The uncertainty is result of:                          
           1. Uncertainty in decay data (1%).                     
           2. Uncertainty in cross section of monitor reaction    
            (8-10%).                                              
           3. Uncertainty in peak area measurement (2-5%).        
           4. Uncertainty in efficiency of the detector (4-6%).   
           5. Uncertainty in target uniformity (3-5%).            
           6. Uncertainty in number of target nuclei (2-5%).      
STATUS     (TABLE)                                                
ENDBIB              46                                            
NOCOMMON                                                          
ENDSUBENT           49