Longitudinal Wobbling Motion in ${}^{187}$Au

Abstract

The rare phenomenon of nuclear wobbling motion has been investigated for the nucleus ${}^{187}$Au. A longitudinal wobbling-bands pair has been identified and clearly distinguished from the associated signature-partner band on the basis of angular distribution measurements. Theoretical calculations in the framework of the Particle Rotor Model (PRM) are found to agree well with the experimental observations. This is the first experimental evidence for longitudinal wobbling bands where the expected signature partner band has also been identified, and establishes this exotic collective mode as a general phenomenon over the nuclear chart.

arXiv commentRevised version. Published in Phys. Rev. Lett

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• First Observation of Multiple Transverse Wobbling Bands of Different Kinds in ${}^{183}$Au
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• Evidence against the wobbling nature of low-spin bands in ${}^{135}$Pr
• Probing the nature of the conjectured low-spin wobbling bands in atomic nuclei
• $g$-factor and static quadrupole moment of ${}^{135}$Pr, ${}^{105}$Pd, and ${}^{187}$Au in wobbling motion
• Questioning the wobbling interpretation of low-spin bands in $\gamma$-soft nuclei within the interacting boson-fermion model
• Influence of moments of inertia on transverse wobbling mode in odd-mass nuclei
• Influence of triaxial deformation on wobbling motion in even-even nuclei
• A new boson approach for the wobbling motion in even-odd nuclei
• Mapped interacting boson model for nuclear structure studies
• Parity Partner Bands in ${}^{163}$Lu: A novel approach for describing the negative parity states from a triaxial super-deformed band