Evidence for nontermination of rotational bands in 74Kr

Phys Rev Lett. 2005 Dec 2;95(23):232501. doi: 10.1103/PhysRevLett.95.232501. Epub 2005 Nov 28.

Abstract

Three rotational bands in 74Kr were studied up to (in one case one transition short of) the maximum spin I(max) of their respective single-particle configurations. Their lifetimes have been determined using the Doppler-shift attenuation method. The deduced transition quadrupole moments reveal a modest decrease, but far from a complete loss of collectivity at the maximum spin I(max). This feature, together with the results of mean field calculations, indicates that the observed bands do not terminate at I = I(max).