Study of β-delayed charged particle emission of 11Li: Evidence of new decay channels

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Abstract

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.

Detaljer

Författare
  • M. Madurga
  • M. J G Borge
  • J. C. Angelique
  • L. Bao
  • U. Bergmann
  • A. Butǎ
  • J. M. Daugas
  • C. Aa Diget
  • L. M. Fraile
  • H. O U Fynbo
  • H. B. Jeppesen
  • B. Jonson
  • E. Lienard
  • F. Marechal
  • M. Marques
  • V. Meot
  • F. Negoita
  • T. Nilsson
  • G. Nyman
  • F. Perrot
  • K. Riisager
  • O. Roig
  • O. Tengblad
  • E. Tengborn
  • M. Turrion
  • K. W. Rolander
Externa organisationer
  • CSIC Instituto de Estructura de la Materia (IEM)
  • University of Caen Normandy
  • Chalmers Tekniska Högskola
  • CERN
  • “Horia Hulubei” National Institute of Physics and Nuclear Engineering
  • Aarhus University
  • Laboratoire de Physique Corpusculaire de Caen (LPC)
Originalspråkengelska
Artikelnummer012024
TidskriftJournal of Physics: Conference Series
Volym111
Utgåva nummer1
StatusPublished - 2008 maj 1
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa