Two-neutron sequential decay of O-24
A two-neutron unbound excited state of O-24 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 Gamma < 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 O-24 -> O-22 + 2n show clear evidence of a sequential decay through an intermediate state in O-23. Neither a di-neutron nor phase-space model for the three-body breakup were able to describe these correlations.
Zhang, Hansong, Jennifer E. Farrell, Joshua N. Hook, Don E. Davis, Daryl R. Van Tongeren, and Kathryn A. Johnson. “Intellectual Humility and Forgiveness of Religious Conflict.” Journal of Psychology and Theology 43, no. 4 (WIN 2015): 255–62.