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Fusion of the positive Q-value system $^{36}$S+$^{48}$Ca well below the Coulomb barrier

Abstract : The fusion excitation function of 36S+48Ca has been measured from well above the barrier down to very small cross sections at sub-barrier energies. A steady decrease of the fusion cross sections is observed below the barrier with no pronounced change of slope. The logarithmic derivative saturates and does not reach the value expected for a constant astrophysical S-factor. The S-factor does not show any maximum in the measured energy range. Coupled-channels calculations using a Woods-Saxon potential have been performed.
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http://hal.in2p3.fr/in2p3-00332576
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Submitted on : Tuesday, October 21, 2008 - 11:19:10 AM
Last modification on : Saturday, June 20, 2020 - 4:18:05 PM

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A.M. Stefanini, G. Montagnoli, R. Silvestri, S. Beghini, L. Corradi, et al.. Fusion of the positive Q-value system $^{36}$S+$^{48}$Ca well below the Coulomb barrier. Physical Review C, American Physical Society, 2008, 78, pp.044607. ⟨10.1103/PhysRevC.78.044607⟩. ⟨in2p3-00332576⟩

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