Evidence of transverse wobbling motion in Eu151

Abstract

Transverse wobbling was investigated in the Eu151 nucleus by populating the excited states using Nd148(Li7, 4n)Eu151 at a beam energy of 30 MeV. Three new interconnecting transitions have been placed between the two negative parity bands. The M1/E2 character of the interconnecting ΔI=1 transitions between the negative parity bands was extracted from the mixing ratios using the RDCO and linear polarization method. The spin and parity of the states of different bands have also been assigned. The dominant E2 character of the interlinking transitions between the yrast and first phonon wobbling band and the dominant M1 character between the yrast band and its signature partner band indicate the presence of transverse wobbling in the Eu151 nucleus. It is further demonstrated that the triaxial projected shell model approach describes the observed experimental properties.7 MoreReceived 21 December 2022Revised 22 January 2023Accepted 8 May 2023DOI:https://doi.org/10.1103/PhysRevC.107.054310©2023 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasCollective levelsNuclear structure & decaysProperties150 ≤ A ≤ 189TechniquesSpectrometers & spectroscopic techniquesNuclear Physics