Fusion of 124,132Sn with 40,48Ca

J. J. Kolata, A. Roberts, A. M. Howard, D. Shapira, J. F. Liang, C. J. Gross, R. L. Varner, Z. Kohley, A. N. Villano, H. Amro, W. Loveland, E. Chavez

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Fusion excitation functions for the reactions of 124,132Sn with 40,48Ca were measured at energies near and below the Coulomb barrier. Weak sub-barrier fusion enhancement accounted for by coupling to the first 2+ and 3- states in the target and projectile was observed for 124,132Sn+48Ca. However, the 124,132Sn+40Ca fusion cross sections are very strongly enhanced below the barrier and this difference survives even after correcting for trivial size effects. Although the enhancement appears to be related to the existence of large positive Q values for neutron transfer reactions, it is not proportional to the magnitudes of those Q values, which are much larger for 132Sn+40Ca than for 124Sn+40Ca.

Original languageEnglish (US)
Article number054603
JournalPhysical Review C - Nuclear Physics
Issue number5
StatePublished - May 2 2012


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