Study of the break-up channel in 11Li+208Pb collisions at energies around the Coulomb barrier
Paper i proceeding, 2014
We present a study of 11Li+208Pb collisions at energies around the Coulomb barrier (Elab 24.3 and 29.8 MeV), measured at the post-accelerated beam facility, ISAC II, at TRIUMF (Vancouver, Canada). A remarkably large yield of 9Li has been observed, a result that is attributed to the weak binding of the 11Li nucleus. The angular distribution of this 9Li yield, relative to the elastic one, has been analysed in terms of first-order semiclassical calculations as well as four-body and three-body Continuum-Discretized Coupled-Channels (CDCC) calculations, based on a three-body and di-neutron model of the 11Li nucleus, respectively. The calculations reproduce well the trend of the data and support the existence of a large concentration of B(E1) strength at very low excitation energies. The connection of this large B(E1) with a possible low-lying dipole resonance is discussed. © Published under licence by IOP Publishing Ltd.
Författare
J. P. Fernandez-Garcia
Universidad de Sevilla
INFN - Laboratori Nazionali del Sud
Consejo Superior de Investigaciones Científicas (CSIC)
M. Cubero
Consejo Superior de Investigaciones Científicas (CSIC)
Centro de Investigación en Ciencias Atómicas
Universidade Federal Fluminense
M. Rodríguez-Gallardo
Universidad de Sevilla
L. Acosta
INFN - Laboratori Nazionali del Sud
Universidad de Huelva
M. Alcorta
Consejo Superior de Investigaciones Científicas (CSIC)
M. A. G. Alvarez
Consejo Superior de Investigaciones Científicas (CSIC)
Universidad de Sevilla
M. J. G. Borge
Consejo Superior de Investigaciones Científicas (CSIC)
L. Buchmann
TRIUMF
C. A. Diget
University of York
H. A. Falou
Saint Mary's University
B. Fulton
University of York
H. O. U. Fynbo
Aarhus Universitet
D. Galaviz
Universidade de Lisboa
J. Gomez-Camacho
Universidad de Sevilla
Consejo Superior de Investigaciones Científicas (CSIC)
R. Kanungo
Saint Mary's University
J. A. Lay
Universidad de Sevilla
Università di Padova
M. Madurga
Consejo Superior de Investigaciones Científicas (CSIC)
I. Martel
Universidad de Huelva
A. Moro
Universidad de Sevilla
I. G. Mukha
Helmholtz
Thomas Nilsson
Chalmers, Fundamental fysik
A. M. Sanchez-Benitez
Universidad de Huelva
Universidade de Lisboa
A. Shotter
University of Edinburgh
O. Tengblad
Consejo Superior de Investigaciones Científicas (CSIC)
P. Walden
TRIUMF
Journal of Physics: Conference Series
17426588 (ISSN) 17426596 (eISSN)
Vol. 515 1 012004Ämneskategorier (SSIF 2011)
Fysik
DOI
10.1088/1742-6596/515/1/012004