Beta decay of neutron-rich and the lowest excited states in
Department of Physics, University of Jyväskylä,
P.O. Box 35 (Y5), FIN-40351 Jyväskylä, Finland
Received: 19 June 2000
Communicated by D. Schwalm
Beta decay of a refractory isotope produced in symmetric fission and mass separated by the ion guide technique has been applied for the study of low-lying excited states of . The yrast band in has been observed up to a 6+ state and the lowest states of the asymmetric -band have been identified. The measured half-life of is ms. The systematics of the excited states in neutron-rich -isotopes implies the saturation towards an O(6)symmetry at N=70.
27.60.+j - 23.20.Lv Gamma transitions and level energies - 21.10.Re Collective levels
Copyright Società Italiana di Fisica, Springer-Verlag 2000