Shape
Changes, Band Crossings and Band Terminations in the Very High Spin
Regin of A=150-160 Nuclei.

T. Bengtsson and I. Ragnarsson

**Abstract:** The
very high spin behaviour of nuclei with ~10 particles outside the 146Gd
core are studied. Our method of calculation, which is based on the cranked
Nilsson-Strutinsky formalism, makes possible to follow individual configurations
as functions of spin. We concentrate on 158Er and 154Dy which nuclei
become oblate with rotation around the symmetry axes for I=40-50. It
is found that most such oblate states can be described as band terminations,
i.e. they correspond to the maximum spin which can be formed if the
distribution of the nucleons over the j-shells is kept fixed. ........

Phys. Scripta T5 (1983) 165