Study of beta-delayed 3-body and 5-body breakup channels observed in the   decay of ^11Li
  The beta-delayed charged particle emission from ^11Li has been studied with emphasis on the three-body n+alpha+^6He and five-body 2alpha+3n channels from the 10.59 and 18.15 MeV states in ^11Be. Monte Carlo simulations using an R-matrix formalism lead to the conclusion that the ^AHe resonance states play a significant role in the break-up of these states. The results exclude an earlier assumption of a phase-space description of the break-up process of the 18.15 MeV state. Evidence for extra sequential decay paths is found for both states. 
M. Madurga, M.J.G. Borge, J.C. Angelique, L. Bao, U. Bergmann, A.   But\u{a}, J. Cederk\"all, C.Aa. Diget, L.M. Fraile, H.O....