• Characterization of isomers of the nucleus154Pm

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    • Keywords

       

      Doubly-odd deformed nucleus154Pm; isomer configurations from 2qp structures and beta selection rules: ground state and beta-connected low-spin levels characterization.

    • Abstract

       

      Consideration of the expected two-quasiparticle structures and their estimated band head energies, and the selection rules for beta transition rates for the154Nd →154Pm →154Sm decays are used to deduce the configurations for the isomers and the low-spin structures in the neutron rich doubly odd nucleus61154Pm93. The 2.68 m high spin isomer and the 1.73 m low spin isomer are respectively assigned the spin-parity 4+ and 1+ with the configuration {p:5/2 [532↑] +n:3/2 [521↑]} with the 2.68 m isomer lying lower in energy, and thus forming the154Pm ground state. Two-quasiparticle character of the beta-connected states in154Nd decay and154Pm decay is discussed.

    • Author Affiliations

       

      P C Sood1 2 R K Sheline1

      1. Florida State University, Tallahassee, FL - 32306-3016, USA
      2. Department of Physics, Banaras Hindu University, Varanasi - 221 005, India
    • Dates

       
  • Pramana – Journal of Physics | News

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