Evolving collective structures in the transitional nucleiW162andW164

Abstract

Excited states in the neutron-deficient nuclides W8874162 and W9074164 were investigated by using the γ-ray spectrometer Jurogam. A change in structure is apparent from the first rotational alignments in W162 and W164, whose rotationally aligned bands are interpreted as ν(h9/2)2 and ν(i13/2)2 configurations, respectively. The level schemes have been extended using recoil (-decay) correlations with the observation of excited collective structures. Configuration assignments have been made on the basis of comparisons of the deduced aligned angular momentum, as a function of rotational frequency, with the predictions of the cranked shell model.1 MoreReceived 24 November 2015Revised 8 January 2016DOI:https://doi.org/10.1103/PhysRevC.93.024307©2016 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasCollective levelsElectromagnetic transitionsLow & intermediate energy heavy-ion reactionsProperties150 ≤ A ≤ 189Nuclear Physics