Abstract
The beta-gamma spectroscopic study of22O is presented. This nucleus, produced as a projectile-like fragment from the interaction of a 60 MeV/n40Ar beam with a Be target, has been separated by the LISE spectrometer. Several gamma rays from22O decay have been observed, from which a half-life of (2.25±0.15)s has been determined. Accurate excitation energies have been deduced for several states in22F. A partial beta decay scheme of22O has been established. Experimental results have been compared with shell model calculations.
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References
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Experiment performed at the GANIL National Laboratory
The authors are very grateful to B.A. Brown for providing the complete22F decay scheme calculated by the shell model and to N. Orr for communicating to us prior to communication the results from the22Ne(7Li,7Be)22F reaction. Thanks to D.W. Spooner for careful reading of the manuscript.