Coupled-channels analyses for 9,11Li + 208Pb fusion reactions with multi-neutron transfer couplings

Ki Seok Choi, Myung Ki Cheoun, W. Y. So, K. Hagino, K. S. Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We discuss the role of two-neutron transfer processes in the fusion reaction of the 9,11Li + 208Pb systems. We first analyze the 9Li + 208Pb reaction by taking into account the coupling to the 7Li + 210Pb channel. To this end, we assume that two neutrons are directly transferred to a single effective channel in 210Pb and solve the coupled-channels equations with the two channels. By adjusting the coupling strength and the effective Q-value, we successfully reproduce the experimental fusion cross sections for this system. We then analyze the 11Li + 208Pb reaction in a similar manner, that is, by taking into account three effective channels with 11Li + 208Pb, 9Li + 210Pb, and 7Li + 212Pb partitions. In order to take into account the halo structure of the 11Li nucleus, we construct the potential between 11Li and 208Pb with a double folding procedure, while we employ a Woods–Saxon type potential with the global Akyüz–Winther parameters for the other channels. Our calculation indicates that the multiple two-neutron transfer process plays a crucial role in the 11Li + 208Pb fusion reaction at energies around the Coulomb barrier.

Original languageEnglish
Pages (from-to)455-460
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume780
DOIs
Publication statusPublished - 2018 May 10

Keywords

  • Coupled-channels method
  • Total fusion cross section

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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