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

6 Jun 2018, 10:45
Kunibiki Messe (Matsue)

Kunibiki Messe


Oral contribution Session 10


Dr Choi Ki-Seok (Department of phyiscs, Soongsil Univ.)


We discuss the role of two-neutron transfer processes in the fusion reaction of the $^{9,11}$Li + $^{208}$Pb systems.
We first analyze the $^{9}$Li + $^{208}$Pb reaction by taking into account the coupling to the
$^{7}$Li + $^{210}$Pb channel. To this end, we assume that two neutrons are directly transferred to a single effective channel in $^{210}$Pb and solve the coupled-channels equations with \textcolor[rgb]{0.98,0.00,0.00}{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 $^{11}$Li + $^{208}$Pb reaction in a similar manner, that is, by taking into account three effective channels with
$^{11}$Li + $^{208}$Pb, $^{9}$Li + $^{210}$Pb, and $^{7}$Li + $^{212}$Pb
partitions. In order to take into account the halo structure of the $^{11}$Li nucleus,
we construct the potential between $^{11}$Li and $^{208}$Pb with a double folding procedure, while we employ a Wood-Saxon type potential with the global Aky\"uz-Winther parameters for the other channels.
Our calculation indicates that the multiple two-neutron transfer process plays a crucial role in the $^{11}$Li + $^{208}$Pb fusion reaction at energies around the Coulomb barrier.

Primary author

Dr Choi Ki-Seok (Department of phyiscs, Soongsil Univ.)


Prof. Cheoun Myung-Ki (Department of physics, Soongsil Univ.) Prof. Kim K.S. (Korea Aerospace University) Dr Kouichi Hagino (Department of Physics, Tohoku University) Prof. So W.Y. (Kangwon National University)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now