Shell-Model Calculations In The Sd Shell .10. Termination Of Rotational Bands

For pt.IX see Phys. Lett., vol.63B, p.385 (1976). It is shown that the shell-model states belonging to a given rotational band have very similar subshell occupancies which are interpreted as indicating similar intrinsic structures. Subshell occupancies can be used to help decide whether or not a state belongs to a given band and hence to determine the upper limits of rotational bands. In the sd shell, the prediction that no rotational bands extend beyond J=10 is made, and in many cases when one might expect them, rotational features are absent.