Neutron correlations in the decay of the first excited state of 11Li

J. K. Smith*, T. Baumann, D. Bazin, J. Brown, P. A. DeYoung, N. Frank, M. D. Jones, Z. Kohley, B. Luther, B. Marks, A. Spyrou, S. L. Stephenson, M. Thoennessen, A. Volya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The decay of unbound excited 11Li was measured after being populated by a two-proton removal from a 13B beam at 71 MeV/nucleon. Decay energy spectra and Jacobi plots were obtained from measurements of the momentum vectors of the 9Li fragment and neutrons. A resonance at an excitation energy of ~1.2 MeV was observed. The kinematics of the decay are equally well fit by a simple dineutron-like model or a phase-space model that includes final state interactions. A sequential decay model can be excluded.

Original languageEnglish (US)
Pages (from-to)27-40
Number of pages14
JournalNuclear Physics A
Volume955
DOIs
StatePublished - Nov 1 2016

Funding

The authors would like to thank Miguel Marqués for sharing the code for the phase space with FSI calculations with us. This work was funded by NSF grant Nos. PHY-096173 , PHY-1102511 , PHY-1205537 , and PHY-1306074 and DOE Grant No. DE-SC-0009883 . This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Grant No. DE-NA0000979 .

Keywords

  • Exotic nuclei
  • Halo nuclei
  • Neutron spectroscopy
  • Three-body correlations

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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