Anomalous behavior of Auger and radiative rates and fluorescence yields along the $1s2s^22p^{3}$ K-shell isoelectronic sequence

POSTER

Abstract

Calculations using two different methodologies have revealed anomalous behaviour of the radiative and Auger rates, and the associated fluorescence yields, of the six electron $1s2s^22p^{3}$ K-shell vacancy isoelectronic sequence as a function of $Z$ from the neutral to $Z$ of 30. This behavior is explained in terms of an accidental degeneracy, an avoided-crossing of two nearly-degenerate spin-orbit coupled states. The results also demonstrate the importance of including both multielectron correlation and spin-orbit effects even at low- $Z$, and that interpolation of computed fluorescence data is inaccurate in general.

*This work was supported in part by NASA APRA and SHP SR\&T programs.

Authors

  • Muhammet Fatih Hasoglu

    • Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008

  • Dragan Nikolic

    • Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008
    • Department of Physics, Western Michigan University, Kalamazoo, MI 49008-5252

  • T. Gorczyca

    • Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008
    • Department of Physics, Western Michigan University, Kalamazoo, MI 49008-5252
    • Physics Department WMU, Kalamazoo, MI

  • S.T. Manson

    • Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303
    • Georgia State University, Atlanta, GA 30303
    • Georgia State University, Atlanta, GA
    • Georgia State University

  • Mau Hsiung Chen

    • Lawrence Livermore National Laboratory, Livermore, CA 94550

  • Nigel R. Badnell

    • Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK
    • Department of Physics, University of Strathclyde, Glasgow, G4 ONG, UK