Breakup threshold anomaly for the {sup 8}B + {sup 58}Ni system at near-Coulomb barrier energies

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.034615· OSTI ID:21596766

Gomez Camacho, A; Aguilera, E F; Gomes, P R. S.; Lubian, J ^[1]

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1. Departamento de Aceleradores Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, C.P. 11801, Mexico, DF (Mexico)

By using recent fusion cross section measurements for the system {sup 8}B + {sup 58}Ni, a simultaneous analysis of elastic scattering, fusion, and total reaction cross sections is performed for the weakly bound system {sup 8}B + {sup 58}Ni at energies close to the Coulomb barrier. The analysis is carried out with an optical potential with fusion and direct reaction parts (i.e., the nuclear polarization potential U is split into a volume part U{sub F}, which accounts for fusion reactions and a surface part U{sub DR}, responsible for direct reactions). The parameters of the Woods-Saxon potentials are determined by a {chi}{sup 2} analysis of the data. The presence of the threshold anomaly is investigated from the energy dependence of both the fusion and direct reaction parts of the polarization potential.

• OSTI ID: 21596766
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.034615; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BORON 8 REACTIONS
COULOMB FIELD
CROSS SECTIONS
DIRECT REACTIONS
ELASTIC SCATTERING
ENERGY DEPENDENCE
NICKEL 58 TARGET
POLARIZATION
SURFACES
WOODS-SAXON POTENTIAL
ELECTRIC FIELDS
HEAVY ION REACTIONS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
POTENTIALS
SCATTERING
TARGETS