Refractive effects in the scattering of loosely bound nuclei
Abstract
A study of the interaction of the loosely bound nuclei Li-6,Li-7 at 9 and 19 MeV/nucleon with light targets has been undertaken. With the determination of unambiguous optical potentials in mind, elastic data for four projectile-target combinations and one neutron transfer reaction C-13(Li-7,Li-8)C-12 have been measured over a large angular range. The kinematical regime encompasses a region where the mean field (optical potential) has a marked variation with mass and energy, but turns out to be sufficiently surface transparent to allow strong refractive effects to be manifested in elastic scattering data at intermediate angles. The identified exotic feature, a "plateau" in the angular distributions at intermediate angles, is fully confirmed in four reaction channels and is interpreted as a prerainbow oscillation resulting from the interference of the barrier and internal barrier far-side scattering subamplitudes.
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/Subject
FOLDING-MODEL POTENTIALSREACTION CROSS-SECTIONS
ELASTIC-SCATTERING
DISPERSION-RELATION
OPTICAL POTENTIALS
INELASTIC-SCATTERING
ENERGY-DEPENDENCE
UNIFIED THEORY
HEAVY-IONS
MEV LI-6
Physics