Effect of continuum couplings in fusion of halo 11Be on 208Pb around the Coulomb barrier

A. Diaz-Torres and I. J. Thompson
Phys. Rev. C 65, 024606 – Published 15 January 2002
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Abstract

The effect of continuum couplings in the fusion of the halo nucleus 11Be on 208Pb around the Coulomb barrier is studied using a three-body model within a coupled discretized continuum channels formalism. We investigate in particular the role of continuum-continuum couplings. These are found to hinder total, complete, and incomplete fusion processes. Couplings to the projectile 1p1/2 bound excited state redistribute the complete and incomplete fusion cross sections, but the total fusion cross section remains nearly constant. Results show that continuum-continuum couplings enhance the irreversibility of breakup and reduce the flux that penetrates the Coulomb barrier. Converged total fusion cross sections agree with the experimental ones for energies around the Coulomb barrier, but underestimate those for energies well above the Coulomb barrier.

  • Received 17 September 2001

DOI:https://doi.org/10.1103/PhysRevC.65.024606

©2002 American Physical Society

Authors & Affiliations

A. Diaz-Torres* and I. J. Thompson

  • Physics Department, University of Surrey, Guildford GU2 7XH, United Kingdom

  • *Email address: A.Diaz-Torres@surrey.ac.uk

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Vol. 65, Iss. 2 — February 2002

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