Anharmonic phonon excitations in subbarrier fusion reactions
K. Hagino, N. Takigawa, S. Kuyucak
Abstract
Recently measured high precision data of fusion excitation function have enabled a detailed study on the effects of nuclear collective excitations on fusion reactions. Using such highly accurate data of the 16O + 144,148Sm reactions, we discuss the anharmonic properties of collective phonon excitations in 144,148Sm nuclei. It is shown that subbarrier fusion reactions are strongly affected by the anharmonic effects and thus offer an alternative method to extract the static quadrupole moments of phonon states in a spherical nucleus.
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