First observation of the 13Li ground state

Z. Kohley*, E. Lunderberg, P. A. Deyoung, A. Volya, T. Baumann, D. Bazin, G. Christian, N. L. Cooper, N. Frank, A. Gade, C. Hall, J. Hinnefeld, B. Luther, S. Mosby, W. A. Peters, J. K. Smith, J. Snyder, A. Spyrou, M. Thoennessen

*Corresponding author for this work

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29 Scopus citations

Abstract

The ground state of neutron-rich unbound 13Li was observed for the first time in a one-proton removal reaction from 14Be at a beam energy of 53.6 MeV/u. The 13Li ground state was reconstructed from 11Li and two neutrons giving a resonance energy of 120-80+60 keV. All events involving single- and double-neutron interactions in the Modular Neutron Array (MoNA) were analyzed, simulated, and fitted self-consistently. The three-body (11Li+n+n) correlations within Jacobi coordinates showed strong dineutron characteristics. The decay energy spectrum of the intermediate 12Li system (11Li+n) was described with an s-wave scattering length of greater than -4 fm, which is a smaller absolute value than reported in a previous measurement.

Original languageEnglish (US)
Article number011304
JournalPhysical Review C - Nuclear Physics
Volume87
Issue number1
DOIs
StatePublished - Jan 31 2013
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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