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16O+16O cluster states and their fusion to 32S: A non-monotonic potential description
(Iop Publishing Ltd, 2022) Basak, A. K.; Merchant, A. C.; Freer, M.; Islam, M. Sujan; Ramon, Ragib Absar; Rahman, M. Mizanur; Tariq, A. S. B.
Non-monotonic (NM) nucleus-nucleus potential families rooted in the Pauli-compliant Energy Density Functional (EDF) theory and especially their behavior at higher energies have been investigated using experimental data for O-16 + O-16 elastic scattering in the range 25 <= E-lab <= 1120 MeV. At E-lab = 75 MeV, the O-16 + O-16 NM potentials in a simple optical model (OM) are found to support five rotational bands of O-16 + O-16 bound and quasi-molecular states in S-32 with the cluster global quantum numbers G = 24, 26, 28, 30 and 32. The lowest band in the experimental spectrum starting at E-x = 7.5357 MeV, and having I-pi = 0(+), 2(+), 4(+), 6(+) and 8(+), has been located for the first time. In the simple OM, the NM potentials are found to reproduce the experimental O-16 + O-16 fusion cross-sections in the energy range 12-31 MeV. The present work shows that both the O-16 + O-16 cluster bands and fusion cross-sections in the Coulomb barrier region can be reproduced using NM potentials. Copyright (C) 2022 EPLA