ENTRY            D0162   20040718
SUBENT        D0162001   20040718                                 
BIB                 10         36                                 
TITLE      Nickel and copper fiols as monitors for cyclotron      
           beam intensities                                       
AUTHOR     (G.A.Brinkman,J.Helmer,L.Lindner)                      
INSTITUTE  (2NEDAMS)                                              
REFERENCE  (J,RRL,28,9,1977)                                      
FACILITY   (SYNCY) Irradiations were performed in the extracted   
           beam (diam.= 2 cm) of the IKO-synchrocyclotron on      
           target foils of diam. = 3 cm. Beam intensties were     
           in the order of tens to hundreds of nanoamperes.       
METHOD     (EXTB,ACTIV)                                           
           Monitor foils were placed in a vacuum chamber provided 
           with a target array to select one out of several target
           foils for insertion in the beam. Beam intensities were 
           calibrated directly by using a conventional Faraday    
           cup. This was done immediately before and after        
           activation, with the target-foils withdrawn from the   
           beam. During irradiation of the foils beam currents    
           were held constant withtin a few percent.              
SAMPLE     The nickel and copper foils used consisted of high     
           purity metal of natural isotopic composition with      
           thicknesses of 94 mg Ni/cm2 (58Ni -68.3%; 60Ni -26.1%, 
           61Ni - 1.1%) and 8.7 mg Cu/cm2 (65Cu - 30.9%),         
           respectively. Degradation of beam energy in these      
           foils was calculated using tabulated data from         
           C.F.Williamson, etc., Tables of range and stopping     
           power, Saclay, CEA-R-3042,1966.                        
DETECTOR   (GELI) Gamma-ray measurements were performed using     
           a 10% (relative to a 3 in. x 3 in. Nal(Tl) detector)   
           Ge(Li) solid state detcctor, ca1ibrated with a set of  
           standard sources.                                      
DECAY-DATA The decay properties of product radionuclides were     
           taken from Nuclear Level Schemes, Ed. Nuclear Data     
           Group, Ac. Press, 1973. 64Cu was calibrated against a  
           specially prepared standard source of 18F, measured in 
           the annihilation radiation.                            
HISTORY    (20040718C) SD                                         
ENDBIB              36          0                                 
NOCOMMON             0          0                                 
ENDSUBENT           39          0