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Longitudinal Wobbling Motion in ^{187}Au.

N Sensharma1, U Garg1, Q B Chen2

  • 1Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA.

Physical Review Letters
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PubMed
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Researchers observed nuclear wobbling motion in the ^{187}Au nucleus, identifying a longitudinal wobbling-bands pair. This provides the first experimental evidence for this exotic collective mode, confirming its general occurrence in atomic nuclei.

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Area of Science:

  • Nuclear Physics
  • Atomic Nuclei

Background:

  • Nuclear wobbling motion is a rare phenomenon observed in atomic nuclei.
  • Understanding collective modes in nuclei is crucial for nuclear structure physics.

Purpose of the Study:

  • To investigate the rare phenomenon of nuclear wobbling motion in the ^{187}Au nucleus.
  • To provide the first experimental evidence for longitudinal wobbling bands and their signature partners.

Main Methods:

  • Investigated nuclear wobbling motion using angular distribution measurements.
  • Employed theoretical calculations within the particle rotor model framework.

Main Results:

  • Identified a longitudinal wobbling-bands pair in the ^{187}Au nucleus.
  • Distinguished the wobbling bands from their signature-partner band using experimental data.
  • Theoretical calculations showed good agreement with experimental observations.

Conclusions:

  • Established the first experimental evidence for longitudinal wobbling bands and their signature partners.
  • Confirmed nuclear wobbling motion as an exotic collective mode with general applicability across the nuclear chart.