Hexadecapole Deformations in W and Os Nuclei from Perturbed Rotational Band Structure

Abstract
The spectroscopic data for even-parity rotational and intrinsic states in W181 and Os187 are shown to be incompatible with very large static nuclear hexadecapole deformations (ε40.2) implied by conventional analysis of recent Coulomb excitation measurements of E4 transition moments in W182 and Os186,188.