Comment on "First Observation of Ground State Dineutron Decay: Be-16" Reply (Spyrou et al. Replies)
We report on the first observation of dineutron emission in the decay of 16Be. A single-proton knockout reaction from a 53 MeV/u 17B beam was used to populate the ground state of 16Be. 16Be 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 16Be was measured to be 1.35(10) MeV, in good agreement with shell model calculations, using standard interactions for this mass region.
Spyrou, A., Z. Kohley, T. Baumann, D. Bazin, B. A. Brown, G. Christian, Paul 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. Thoenessen and A. Volya. "Comment On "First Observation of Ground State Dineutron Decay: Be-16" Reply (Spyrou Et Al. Replies)." Physical Review Letters 109, no. 23 (2012).