Anharmonic phonon excitations in subbarrier fusion reactions

Details Anharmonic phonon excitations in subbarrier fusion reactions Anharmonic phonon excitations in subbarrier fusion reactions

1997-09-29

arxiv.org/abs/nucl-th/9709068v1

Physics

Nuclear Physics

Nuclear Theory

10 pages, To be published in the Proceedings of the Tours Symposium on Nuclear Physics III, Tours, France, September 1997 (Ame

Scientific paper

10.1063/1.55154

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 $^{16}$O + $^{144,148}$Sm reactions, we discuss the anharmonic properties of collective phonon excitations in $^{144,148}$Sm 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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