• M Sainath

      Articles written in Pramana – Journal of Physics

    • Beta decay of 125Sb and level structures in 125Te

      M Sainath K Venkataramaniah P C Sood

      More Details Abstract Fulltext PDF

      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.

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