COMMENTS ON THE HIGH SPIN SPECTROSCOPY OF ¹⁶³Lu

The new striking feature of anomalously low second band crossing frequency observed in ¹⁶³Lu is interpreted as the shape variation with the quasiparticle (q.p.) configurations as a result of the deformation driving of the rotating q.p. high-j orbits. On the assumption that the crossing frequency is basically determined by an average over deformations before and after the crossing, the experimental data is reproduced very well by the present model calculation.