Two-neutron sequential decay ofO24

M. D. Jones, N. Frank, T. Baumann, J. Brett, J. Bullaro, P. A. DeYoung, J. E. Finck, K. Hammerton, J. Hinnefeld, Z. Kohley, A. N. Kuchera, J. Pereira (+9 others)
2015 Physical Review C  
A two-neutron unbound excited state of ^24O was populated through a (d,d') reaction at 83.4 MeV/nucleon. A state at E = 715 ± 110 (stat) ± 45 (sys) keV with a width of Γ < 2 MeV was observed above the two-neutron separation energy placing it at 7.65 ± 0.2 MeV with respect to the ground state. Three-body correlations for the decay of ^24O → ^22O + 2n show clear evidence for a sequential decay through an intermediate state in ^23O. Neither a di-neutron nor phase-space model for the three-body breakup were able to describe these correlations.
doi:10.1103/physrevc.92.051306 fatcat:tlokh2pcezfdza5svjmomqgbla