Properties of the levels in 22Na deduced from the 19F(α,nγ)22Na reaction

For gamma rays following the 19F(α,nγ)22Na reaction, angular distribution, linear polarization, and DSA measurements have been analysed to extend the experimental information on the rotational bands in 22Na. In particular the spins, parities, and mean lifetimes of the states belonging to certain bands have been determined. In addition, the spins, parities and lifetimes of the 4.360, 5.063, and 5.100 MeV states were determined. All the positive parity states below 5.1 MeV have been interpreted in terms of spherical shell model configurations for six particles in the s-d shell predicted by the Manchester-Glasgow shell model program, using the Preedom and Wildenthal interaction. (author)