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arXiv · 0806.3025

Study of beta-delayed 3-body and 5-body breakup channels observed in the decay of ^11Li

M. Madurga·M. J. G. Borge·J. C. Angelique·L. Bao·U. Bergmann·A. Bută·J. Cederkäll·C. Aa. Diget·L. M. Fraile·H. O. U. Fynbo·H. B. Jeppesen·B. Jonson·F. Maréchal·F. M. Marqués·T. Nilsson·G. Nyman·F. Perrot·K. Riisager·O. Tengblad·E. Tengborn·M. Turrión·K. Wilhelmsen
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Abstract

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.

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M. Madurga, M. J. G. Borge, J. C. Angelique, L. Bao, U. Bergmann, A. Bută, J. Cederkäll, C. Aa. Diget, L. M. Fraile, H. O. U. Fynbo, H. B. Jeppesen, B. Jonson, F. Maréchal, F. M. Marqués, T. Nilsson, G. Nyman, F. Perrot, K. Riisager, O. Tengblad, E. Tengborn, M. Turrión, K. Wilhelmsen. 2008-06-18. Study of beta-delayed 3-body and 5-body breakup channels observed in the decay of ^11Li. https://doi.org/10.1016/j.nuclphysa.2008.07.008

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