Fusion at deep subbarrier energies: potential inversion revisited

Journal Article · Wed Mar 04 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3108791· OSTI ID:21289458

Hagino, K ^[1]; Rowley, N ^[2]

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1. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)
2. Institut Pluridisciplinaire Hubert Curien (UMR 7178: CNRS/ULP), 23 rue du Loess, F-67037 Strasbourg Cedex 2 (France)

For a single potential barrier, the barrier penetrability can be inverted based on the WKB approximation to yield the barrier thickness. We apply this method to heavy-ion fusion reactions at energies well below the Coulomb barrier and directly determine the inter-nucleus potential between the colliding nuclei. To this end, we assume that fusion cross sections at deep subbarrier energies are governed by the lowest barrier in the barrier distribution. The inverted inter-nucleus potentials for the {sup 16}O+{sup 144}Sm and {sup 16}O+{sup 208}Pb reactions show that they are much thicker than phenomenological potentials. We discuss a consequence of such thick potential by fitting the inverted potentials with the Bass function.

• OSTI ID: 21289458
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1098; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB FIELD
CROSS SECTIONS
HEAVY ION FUSION REACTIONS
LEAD 208 REACTIONS
NUCLEAR POTENTIAL
OXYGEN 16 REACTIONS
SAMARIUM 144 TARGET
WKB APPROXIMATION