Excitation functions of alpha particle induced reactions on aluminium and copper

Cross-sections for the reactions with product nuclei 24Na, 22Na, 68Ga and 67Ga were investigated over the energy range of 30 to 75 MeV for alpha particle induced reactions on natural aluminium and copper, using stacked-foil activation technique. The measured excitation functions were analysed with special reference to their suitability for monitoring beam energy and intensity. The experimental results were compared with the predictions of hybrid model of Blann. The assumption of initial exciton number no = 4(4p0h) best satisfies the measured excitation functions in the present work. (author)