Refractive effects in the scattering of loosely bound nuclei

Florin Carstoiu, Livius Trache, Robert E. Tribble, and Carl A. Gagliardi
Phys. Rev. C 70, 054610 – Published 18 November 2004

Abstract

A study of the interaction of the loosely bound nuclei Li6,7 at 9 and 19MeVnucleon 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 C13(Li7,Li8)C12 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.

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  • Received 17 February 2004

DOI:https://doi.org/10.1103/PhysRevC.70.054610

©2004 American Physical Society

Authors & Affiliations

Florin Carstoiu1,2,3, Livius Trache1, Robert E. Tribble1, and Carl A. Gagliardi1

  • 1Cyclotron Institute, Texas A & M University, College Station, Texas 77843-3366, USA
  • 2Laboratoire de Physique Corpusculaire, IN2P3-CNRS, ISMRA et Université de Caen, F-14050 Caen cedex, France
  • 3National Institute for Physics and Nuclear Engineering “Horia Hulubei,” P.O. Box MG-6, 76900 Bucharest-Magurele, Romania

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Issue

Vol. 70, Iss. 5 — November 2004

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