First observation of ground state dineutron decay: Be16

A. Spyrou*, Z. Kohley, T. Baumann, D. Bazin, B. A. Brown, G. Christian, P. A. Deyoung, J. E. Finck, N. Frank, E. Lunderberg, S. Mosby, W. A. Peters, A. Schiller, J. K. Smith, J. Snyder, M. J. Strongman, M. Thoennessen, A. Volya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

105 Scopus citations


We report on the first observation of dineutron emission in the decay of Be16. A single-proton knockout reaction from a 53MeV/u B17 beam was used to populate the ground state of Be16. Be16 is bound with respect to the emission of one neutron and unbound to two-neutron emission. The dineutron character of the decay is evidenced by a small emission angle between the two neutrons. The two-neutron separation energy of Be16 was measured to be 1.35(10) MeV, in good agreement with shell model calculations, using standard interactions for this mass region.

Original languageEnglish (US)
Article number102501
JournalPhysical review letters
Issue number10
StatePublished - Mar 9 2012
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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