Abstract

Measurements of fusion excitation functions of $^{58}\mathrm{Ni}+^{124}\mathrm{Sn}$ and $^{64}\mathrm{Ni}+^{124}\mathrm{Sn}$ are extended towards lower energy to cross sections of 1 $\ensuremath{\mu}\mathrm{b}$ and are compared to detailed coupled-channels calculations. The calculations clearly show the importance of including transfer reactions in a coupled-channels treatment for such heavy systems. This result is different from the conclusion made in a previous article which claimed that the influence of transfer on fusion is not important for fusion reactions of $\mathrm{Ni}+\mathrm{Sn}$. In the energy region studied in this experiment no indication of fusion hindrance has been observed, which is consistent with a systematic study of this behavior.

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