Study of β-delayed charged particle emission of 11Li: Evidence of new decay channels
Artikel i vetenskaplig tidskrift, 2008
The break-up of the 18.2 MeV state in 11Be was studied in a 11Li β-decay experiment. We report here on the study of the dominating breakup channels involving na6He or 3n2α in the final state, with special emphasis dedicated in this contribution to the three-particle channel. The two emitted charged particles were detected in coincidence using a highly segmented experimental set-up. The observed experimental energy-vs-energy scatter plot indicates a sequential breakup where nuclei of mass 4, alpha particles, and mass 7, 7He, are involved. A Monte-Carlo simulation of the sequential channel, 11Be* → α + 7He → nα6He was performed and compared to the experimental data and to a simulation of the direct break-up of the 18.2 MeV state nα6He by phase space energy distribution. The energy-versus-energy plot are explained by the sequential simulation but not by the phase space simulation.
Författare
M. Madurga
Consejo Superior de Investigaciones Científicas (CSIC)
M. J. G. Borge
Consejo Superior de Investigaciones Científicas (CSIC)
J. C. Angelique
Normandie Université
Ling Bao
Chalmers, Teknisk fysik, Subatomär fysik
U. Bergmann
CERN
A. ButÇŽ
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
Normandie Université
J. Cederkäll
CERN
J. M. Daugas
Normandie Université
C. Aa Diget
Aarhus Universitet
L. M. Fraile
CERN
H. O. U. Fynbo
Aarhus Universitet
H. B. Jeppesen
Aarhus Universitet
Björn Jonson
Chalmers, Teknisk fysik, Subatomär fysik
E. Lienard
Normandie Université
F. Marechal
Normandie Université
M. Marques
Normandie Université
V. Meot
Normandie Université
F. Negoita
Normandie Université
T. Nilsson
CERN
Göran Hugo Nyman
Chalmers, Teknisk fysik, Subatomär fysik
F. Perrot
Normandie Université
K. Riisager
Aarhus Universitet
O. Roig
Normandie Université
O. Tengblad
Consejo Superior de Investigaciones Científicas (CSIC)
E. Tengborn
CERN
M. Turrion
CERN
Katarina Wilhelmsen Rolander
Chalmers, Teknisk fysik, Subatomär fysik
Journal of Physics: Conference Series
17426588 (ISSN) 17426596 (eISSN)
Vol. 111 1 012024Ämneskategorier (SSIF 2011)
Fysik
DOI
10.1088/1742-6596/111/1/012024