Excitation functions for the production of 109Cd, 109In and 109Sn in proton bombardment of indium up to 200 MeV

Effective cross-sections for the production of 109Cd as well as its precursors in the bombardment of natIn with protons were measured from threshold to 200 MeV. A thick-target production-rate curve for 109Cd, based on its measured integral excitation function, was derived. The measured practical production rate at ∼ 100 MeV, 10 μA was found to be in good agreement with it. The experimental results were well reproduced by theoretical model calculations, the results of which were consequently used to predict thick-target production rates for a 100% enriched 113In target also. Both production routes offer substantially higher yields than the commonly-used ones employing Ag targets. (author)