https://doi.org/10.1140/epja/i2019-12852-9
Review
Soft giant resonance in two neutron halo nucleus 11Li
1
IRCNPC and School of Physics, Beihang University, 100191, Beijing, China
2
RCNP, Osaka University, 567-0047, Osaka, Japan
* e-mail: tanihata@rcnp.osaka-u.ac.jp
Received:
16
May
2019
Accepted:
9
August
2019
Published online:
3
December
2019
Lithium-11 is a showcase of neutron halos and has been providing new insight to nuclear structure researches. Recently, an isoscalar resonance at low excitation energy (
MeV) has been confirmed by the development of a low-energy high-intensity beam of 11Li at TRIUMF. By inelastic scattering measurements 
and 
with inverse kinematics, the first excited state of 11Li has been studied in detail and an isoscalar nature of the transitions has been confirmed and a strong transition amplitude has been observed indicating the soft-resonance of 11Li. Those recent experimental results on the excitation of the soft resonance are described and then recent theoretical developments based on the four-body continuum-discretized coupled-channels 11Li + p system are presented together with a brief history of the resonance search in 11Li.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
