Fusion versus Breakup: Observation of Large Fusion Suppression for ^9Be + ^{208}Pb

Abstract

Complete fusion excitation functions for ${}^9$Be + ${}^{208}$Pb have been measured to high precision at near barrier energies. The experimental fusion barrier distribution extracted from these data allows reliable prediction of the expected complete fusion cross-sections. However, the measured cross-sections are only 68% of those predicted. The large cross-sections observed for incomplete fusion products support the interpretation that this suppression of fusion is caused by ${}^9$Be breaking up into charged fragments before reaching the fusion barrier. Implications for the fusion of radioactive nuclei are discussed.

RevTex, 11 pages, 2 postscript figures, to appear in PRL

References in corpus (2)

• Adiabatic quantum tunneling in heavy-ion sub-barrier fusion
• Evidence of Double Phonon Excitations in ^{16}O + ^{208}Pb Reaction

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