YIELDS OF RADIONUCLIDES PRODUCED IN THICK TARGETS BOMBARDED WITH 3.0-GEV ELECTRONS

Thick targets of aluminum, iron, and lead were bombarded with 3.0-GeV electrons. γ-ray spectra of the bombarded samples were measured with a Ge(Li) spectrometer. These spectra were used to determine yields of individual radionuclides as a function of depth in the targets. The target thickness at which the yield curves peak decreases with the number of charged particles emitted from the target nucleus. The target thicknesses at which the yield curves peak were used to obtain estimates of the dominant photon energies for the production of each nuclide. © 1969 The American Physical Society.