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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/053/03/0463-0468

    • Keywords

       

      Magnetic rotation; shears mechanism; nearly spherical nuclei; signature splitting; Pb isotopes; particle rotor model

    • Abstract

       

      Nearly-spherical nuclei in three mass regions have recently been observed to exhibit rotational-like features. We have identified almost 80 such bands; largest number (43) lie in the lead region. Most of these bands are assigned oblate multi-quasiparticle configurations. Their interpretation in terms of ‘magnetic rotation’ does not allow for signature splitting in these bands. We have however found signature splitting as well as signature inversion in many bands. We apply the two-quasiparticle plus rotor model to understand the occurrence of signature splitting vis-a-vis the role of ‘shears mechanism’ in these bands.

    • Author Affiliations

       

      A Mita1 Ashok K Jain1 Alpana Goel1 2 Balraj Singh1 3

      1. Department of Physics, University of Roorkee, Roorkee - 247 667, India
      2. Career Institute of Technology and Management, Faridabad, India
      3. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario - L8S 4M1, Canada
    • Dates

       
  • Pramana – Journal of Physics | News

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