The Yields of Photonuclear Reactions in Titanium and Vanadium with Bremsstrahlung up to 60 MeV

Abstract
The yields of a number of radioactive nuclei produced by (γ,xnyp) reactions on titanium and vanadium targets have been determined at four different bremsstrahlung maximum energies, 30, 45, 55 and 60 MeV, with the aid of radiochemical methods and gamma-ray spectrometric measurements. The linear electron accelerator of Tohoku University was the bremsstrahlung source. Yields have been expressed as production rates of given radioactive end-products relative to that of the 12C(γ,n)11C process. Over the range of energies investigated, the yield of each nuclide increases with increasing maximum energy. The yield of a reaction with the emission of more than one nucleon appeared to be strongly energy dependent. Reaction paths leading to the formation of each nuclide were investigated. The photoproduction of 47Ca from titanium has been observed.