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

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

1999-01-06

arxiv.org/abs/nucl-ex/9901003v2

Phys.Rev.Lett.82:1395-1398,1999

Physics

Nuclear Physics

Nuclear Experiment

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

Scientific paper

10.1103/PhysRevLett.82.1395

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.

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