Unexpected Behavior of Heavy-Ion Fusion Cross Sections at Extreme Sub-Barrier Energies - INSPIRE

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Unexpected Behavior of Heavy-Ion Fusion Cross Sections at Extreme Sub-Barrier Energies

Jul 29, 2002

4 pages

Published in:

Phys.Rev.Lett. 89 (2002) 052701

DOI:

10.1103/PhysRevLett.89.052701

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Abstract: (APS)

The excitation function for fusion evaporation in the ︀60Ni+ ︀89Y system was measured over a range in cross section covering 6 orders of magnitude. The cross section exhibits an abrupt decrease at extreme sub-barrier energies. This behavior, which is also present in a few other systems found in the literature, cannot be reproduced with present models, including those based on a coupled-channels approach. Possible causes are discussed, including a dependence on the intrinsic structure of the participants.

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Figures(0)

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