Evers, Maurits; Dasgupta, Mahananda; Luong, Huy; Rafiei, Ramin; du Rietz, Rickard; Hinde, David
The sub-barrier excitation function of the octupole vibrational state at 2.615 MeV in Pb208 is analyzed within the coupled-channels framework. It is shown that the position of the minimum in the excitation function, which is due to the destructive interference of the Coulomb and nuclear scattering amplitudes, is very sensitive to the nuclear potential for both the ground state and the octupole state. A different nuclear potential for the 3- state may arise from changes in the matter...[Show more]
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