Browsing by Author "Getachew, Getahun"

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    Pre-Equilibrium Evaporation of Neutrons from Some a+ 93NB Systems at Cyclotron Energies
    (Addis Ababa University, 2011-06) Getachew, Getahun
    In this study, calculations of the excitation function of 93Nb( , n)96Tc, 93Nb( , 2n)95Tc, 93Nb( , 3n)94Tc reactions have been carried out in the incident alpha energy range from 10-42 MeV. In these calculations,the pre-equilibrium e ects have been investigated . Some of the most widely used pre-equilibrium nuclear models are Intra-Nuclear-Cascade(INC) model, Harp-Miller-Berne(HMB) model , Exciton model and Hybrid/Geometery De- pendent Hybrid(GDH) models. The calculations were done using ALICE-91 computer code,which is based on GDH model and various parameters were changed to see the e ects on the excitation function.The calculated results have been compared with experimental data taken from data EXFOR library