Pre-equilibrium analysis of the alpha-particle induced reactions in niobium in the energy range 30 - 80 MeV

Abstract

Stacked foil activation technique and Ge(Li) gamma-ray spectroscopy have been used for the investigation of alpha particle induced reactions in the target element niobium up to 80 MeV. Eleven excitation functions were measured for the production of , , , , , , , and with a view to adding new data points in the energy region where there are no existing data, and to improve the quality of earlier measurements having divergencies beyond the experimental errors. Secondly, a comparison with the pre-equilibrium hybrid model and the index model have been made using the initial exciton number (4p0h). While the shapes of the excitation functions were fairly reproduced with both models, the hybrid model consistently resulted in a better agreement.

Level structure ofNb95

“…The nuclear properties of the neutron-rich odd 95 Nb nucleus have been investigated with the ( 3 He,d), (d, 3 He), (α, 2p), (α, t) and (t, α) reactions [1][2][3][4][5] and from the decay of 95 Zr [6]. The nuclei Sr, Zr, Mo, and Ru exist in the transitional region because of the transition in shapes from spherical to deformed [7][8][9][10].…”