Low-spin indentical bands in neighboring odd-<i>A</i> and even-even nuclei: A challenge to mean-field theories

C. Baktash; J. D. Garrett; D. F. Winchell; A. Smith

doi:10.1103/PhysRevLett.69.1500

Low-spin indentical bands in neighboring odd-A and even-even nuclei: A challenge to mean-field theories

C. Baktash, J. D. Garrett, D. F. Winchell, and A. Smith

Phys. Rev. Lett. 69, 1500 – Published 7 September 1992

Abstract

A comprehensive study of odd-A rotational bands in normally deformed rare-earth nuclei indicates that a large number of seniority-one configurations (30% for odd-Z nuclei) at low spin have moments of inertia nearly identical to that of the seniority-zero configuration of the neighboring even-even nucleus with one less nucleon. It is difficult to reconcile these results with conventional models of nuclear pair correlation, which predict variations of about 15% in the moments of inertia of configurations differing by one unit in seniority.