In-Beam Spectroscopy of Nuclei Produced in the 98Mo(16O, xn) Reaction

The 98Mo(16O, xn) reaction has been used to study the level structure of the semi-magic nuclei 11050Sn, 11150Sn and 11250Sn. The OSIRIS-II array equipped with 10 HPGe detectors with anticompton shields was used in conjunction with an 48-element BGO multiplicity filter. The experiments performed with projectile energy E(16O) = 60 - 80 MeV brought results on relative excitation functions, γ-ray angular distributions, as well as on γ-γ and γ- tRF coincidences. The measurements include also γ-ray multiplicity and total energy data as well as the investigations of radioactive decays. The selected results on the properties of excited states in the studied nuclei are reported. In particular, the evidence for a neutron-core coupling in 111Sn, and the extension of the intruder and negative parity bands in 110Sn and 112Sn nuclei are presented. (author)