Potential inversion with sub-barrier fusion data reexamined

Journal Article · Wed Aug 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.021601· OSTI ID:21061929

Hagino, K; Watanabe, Y ^[1]

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

We invert experimental data for heavy-ion fusion reactions 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 sub-barrier energies are governed by the lowest barrier in the barrier distribution. 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. A relation to the steep fall-off phenomenon of fusion cross sections recently found at deep sub-barrier energies is also discussed.

• OSTI ID: 21061929
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 76; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB FIELD
CROSS SECTIONS
DISTRIBUTION
HEAVY ION FUSION REACTIONS
LEAD 208
LEAD 208 TARGET
NUCLEAR POTENTIAL
OXYGEN 16
OXYGEN 16 REACTIONS
SAMARIUM 144
SAMARIUM 144 TARGET