Breakup dynamic polarization potential for {sup 6}He+{sup 208}Pb: Energy dependence and generic properties

Journal Article · Sun May 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.057601· OSTI ID:20698709

Keeley, N; Mackintosh, R S ^[1]

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1. CEA/DSM/DAPNIA/SPhN Saclay, F-91191 Gif-sur-Yvette (France)

We extend to a series of higher energies an earlier study, R. S. Mackintosh and N. Keeley, Phys. Rev. C 70, 024604 (2004), of the local dynamic polarization potential for the {sup 6}He+{sup 208}Pb interaction. The dynamic polarization potential generated by the coupling to breakup channels is determined using the CDCC-plus-inversion method and does not involve semiclassical approximations. The long-ranged potential generated by the dipole breakup persists, with very little change in radial form and relative strength of real and imaginary terms, to energies far above the near Coulomb barrier energy. The dynamic polarization potentials presented here extend from 10 fm, well inside the strong absorption radius, out to 60 fm (i.e., including the transition region from where nuclear excitation dominates to the asymptotic region dominated by electric dipole excitation). Real and imaginary components of the dynamic polarization potential each contribute substantially to the scattering.

• OSTI ID: 20698709
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
BREAKUP REACTIONS
COULOMB FIELD
COUPLING
ELECTRIC DIPOLES
ENERGY DEPENDENCE
EXCITATION
HELIUM 6 REACTIONS
LEAD 208 TARGET
POLARIZATION
POTENTIALS
SEMICLASSICAL APPROXIMATION