Evidence of Soft Dipole Resonance in Li-11 with Isoscalar Character

Publication Type
Journal Article
Year of Publication
2015
Authors
Kanungo, R.
Sanetullaev, A.
Tanaka, J.
Ishimoto, S.
Hagen, G.
Myo, T.
Suzuki, T.
Andreoiu, C.
Bender, P.
Chen, A. A.
Davids, B.
Fallis, J.
Fortin, J. P.
Galinski, N.
Gallant, A. T.
Garrett, P. E.
Hackman, G.
Hadinia, B.
Jansen, G.
Keefe, M.
Krucken, R.
Lighthall, J.
McNeice, E.
Miller, D.
Otsuka, T.
Purcell, J.
Randhawa, J. S.
Roger, T.
Rojas, A.
Savajols, H.
Shotter, A.
Tanihata, I.
Thompson, I. J.
Unsworth, C.
Voss, P.
Z. Wang
Name of Publication
Physical Review Letters
Volume
114
Pagination
5
Issue
19
Date Published
May
Type of Article
Article
Short Title
Evidence of Soft Dipole Resonance in Li-11 with Isoscalar Character
Accession Number
WOS:000354363600006
ISBN Number
0031-9007
Keywords
beams, halo, neutron-rich nuclei, Physics, shell, spectroscopy
Abstract

The first conclusive evidence of a dipole resonance in Li-11 having isoscalar character observed from inelastic scattering with a novel solid deuteron target is reported. The experiment was performed at the newly commissioned IRIS facility at TRIUMF. The results show a resonance peak at an excitation energy of 1.03 +/- 0.03 MeV with a width of 0.51 +/- 0.11 MeV (FWHM). The angular distribution is consistent with a dipole excitation in the distorted-wave Born approximation framework. The observed resonance energy together with shell model calculations show the first signature that the monopole tensor interaction is important in Li-11. The first ab initio calculations in the coupled cluster framework are also presented.