Fusion and Quasi-elastic scattering around the Coulomb barrier: determination of inter-nucleus potential

Journal Article · Mon May 04 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3141672· OSTI ID:21304797

Hagino, K ^[1]

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1. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)

We invert experimental data for heavy-ion fusion cross sections at energies well below the Coulomb barrier in order to directly determine the internucleus potential between the colliding nuclei. In contrast to the previous applications of the inversion formula, we explicitly take into account the effect of channel couplings on fusion reactions, by assuming that fusion cross sections at deep subbarrier energies are governed by the lowest barrier in the barrier distribution. The surface region of the internuclear potential is determined from quasi-elastic scattering at deep subbarrier energies, while the inner part is determined with the WKB formula. We apply this procedure to the {sup 16}O+{sup 144}Sm and {sup 16}O+{sup 208}Pb reactions, and find that the inverted internucleus potential are much thicker than phenomenological potentials.

• OSTI ID: 21304797
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1120; 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 TARGET
NUCLEAR POTENTIAL
OXYGEN 16 REACTIONS
POTENTIALS
QUASI-ELASTIC SCATTERING
SAMARIUM 144 TARGET
WAVE EQUATIONS
WKB APPROXIMATION