• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/053/02/0289-0305

    • Keywords

       

      Radioactivity; 125Sb beta decay; mini orange; internal conversion coefficients; multipolarity; 125Te level scheme

    • Abstract

       

      The decay of 2.76y 125Sb to levels of 125Te has been studied using an HPGe detector for gamma-ray and a mini orange electron spectrometer for conversion electron measurements. We identify 38 transitions in this decay, including 13 gamma rays and 4 conversion electron lines being reported for the first time. New results also include E1 multipolarity assignments to 3 newly observed transitions and M-shell conversion coefficient for the 109 keV M4 transition. A revised 125Te level scheme is constructed using Ritz combination principle. While confirming the existence of 10 well established levels below 700 keV excitation, we introduce 3 other levels at 402.0, 538.6 and 652.9 keV. Interpretation of the observed levels in terms of various theoretical approaches is briefly discussed. The newly introduced 538.6 keV (1/2+) and 652.9 keV (3/2+) levels are seen as the two missing members of the (s1/2 ⊗ 2+) and (d3/2 ⊗ 2+) sextuplet in the quasiparticle-phonon coupling scheme.

    • Author Affiliations

       

      M Sainath1 K Venkataramaniah1 P C Sood1 2

      1. Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prashanthinilayam - 515 134, India
      2. Department of Physics, Banaras Hindu University, Varanasi - 221 005, India
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.