Evidence for a doubly magic 24O

By C. Hoffman, T. Baumann, D. Bazin, J. Brown, G. Christian, D. H. Denby, P. DeYoung, J. Finck, N. Frank, J. Hinnefeld and 9 more. 2009

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Abstract The decay energy spectrum for neutron unbound states in 24O ( Z = 8 , N = 16 ) has been observed for the first time. The resonance energy of the lowest lying state, interpreted as the 2 + level, has been observed at a decay energy above 600 keV. The resulting excitation energy of the 2 + level above 4.7 MeV, supplies strong evidence that 24O is a doubly magic nucleus. The data is also consistent with the presence of a second excited state around 5.33 MeV which can be interpreted as the 1 + level.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics, Radiation

View Paper: https://www.semanticscholar.org/paper/59f1e6ccbf4763f0c27bcf9eb7dd9f39bff345c2