Hindrance in the fusion of $^{48}$Ca+$^{48}$Ca

Details Hindrance in the fusion of $^{48}$Ca+$^{48}$Ca Hindrance in the fusion of $^{48}$Ca+$^{48}$Ca

2010-11-28

arxiv.org/abs/1011.6094v1

Phys.Rev.C82:054621,2010

Physics

Nuclear Physics

Nuclear Theory

8 pages, 7 figures

Scientific paper

10.1103/PhysRevC.82.054621

The coupled-channels technique is applied to analyze recent fusion data for $^{48}$Ca+$^{48}$Ca. The calculations include the excitations of the low-lying $2^+$, $3^-$ and $5^-$ states in projectile and target, and the influence of mutual excitations as well as the two-phonon quadrupole excitations is also investigated. The ion-ion potential is obtained by double-folding the nuclear densities of the reacting nuclei with the M3Y+repulsion effective interaction but a standard Woods-Saxon potential is also applied. The data exhibit a strong hindrance at low energy compared to calculations that are based on a standard Woods-Saxon potential but they can be reproduced quite well by applying the M3Y+repulsion potential with an adjusted radius of the nuclear density. The influence of the polarization of high-lying states on the extracted radius is discussed.

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