Simultaneous analysis of elastic scattering and transfer/breakup channels for the 6He+208Pb reaction at energies near the Coulomb barrier

Abstract

The elastic and alpha-production channels for the 6He+208Pb reaction are investigated at energies around the Coulomb barrier (E_{lab}=14, 16, 18, 22, and 27 MeV). The effect of the two-neutron transfer channels on the elastic scattering has been studied within the Coupled-Reaction-Channels (CRC) method. We find that the explicit inclusion of these channels allows a simultaneous description of the elastic data and the inclusive alpha cross sections at backward angles. Three-body Continuum-Discretized Coupled-Channels (CDCC) calculations are found to reproduce the elastic data, but not the transfer/breakup data. The trivially-equivalent local polarization potential (TELP) derived from the CRC and CDCC calculations are found to explain the features found in previous phenomenological optical model calculations for this system.

7 pages, 6 figures (replaced with updated version)

References in corpus (5)

• Four-body continuum-discretized coupled-channels calculations using a transformed harmonic oscillator basis
• Improved di-neutron cluster model for 6He scattering
• Four-body continuum-discretized coupled-channels calculations
• alpha-particle production in the scattering of 6He by 208Pb at energies around the Coulomb barrier
• Long range effects on the optical model of 6He around the Coulomb barrier

Cited by in corpus (2)

• Breakup mechanisms in the 6He+64Zn reaction at near-barrier energies
• Systematic calculations of reactions with exotic and stable nuclei to establish a unified theoretical approach