A theoretical interpretation of the anomalous reduced E2 transition probabilities along the yrast line of neutron-deficient nuclei

Authors

Yu Zhang, Liaoning Normal University
Ying Wen He, Liaoning Normal University
D. Karlsson, The Royal Institute of Technology (KTH)
Chong Qi, The Royal Institute of Technology (KTH)
Feng Pan, Liaoning Normal University
J. P. Draayer, Louisiana State University

Document Type

Article

Publication Date

11-10-2022

Abstract

The anomalous low-energy E2-related behavior of a triaxially deformed nuclei is examined within the framework of the interacting boson model. The results show striking features that include a B(E2;41⁺→21⁺)/B(E2;21⁺→01⁺)< 1.0 transition rate and a E(41⁺)/E(21⁺)>2.0 excitation energy ratio that can be tracked back to a finite-N effect, which in a large-N limit of the theory yields normal results for a stable γ-deformation. This description is shown to explain experimentally observed results in ¹⁷²Pt and ¹⁶⁸Os, and in doing so yields a deeper understanding of the physical features of a soft triaxially-deformed nucleus.

Publication Source (Journal or Book title)

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

Recommended Citation

Zhang, Y., He, Y., Karlsson, D., Qi, C., Pan, F., & Draayer, J. (2022). A theoretical interpretation of the anomalous reduced E2 transition probabilities along the yrast line of neutron-deficient nuclei. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 834 https://doi.org/10.1016/j.physletb.2022.137443