Nuclear Resonance Fluorescence in 74Ge

ORAL

Abstract

The germanium isotopes are known to display shape coexistence. Understanding the structure of 74Ge is key to tracking the transition from an oblate to a prolate shape along the isotopic chain. We investigate the structure of 74Ge using nuclear resonance fluorescence by exiting low-spin levels with a photon beam provided by the High Intensity Gamma-Ray Source (HIGS) at TUNL. This work identified several new levels and decays between 3 and 5.6 MeV and determined their spin, parity, as well as their integrated photon scattering cross sections. We observed decays to the low-lying 0+ and 2+ states and determined branching ratios and the multipolarity of the electromagnetic transitions, when possible. Comparisons with shell-model calculations will be presented.

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Presenters

  • Samantha R Johnson

    Triangle Universities Nuclear Laboratory

Authors

  • Samantha R Johnson

    Triangle Universities Nuclear Laboratory

  • Udo Friman-Gayer

    Duke University, Triangle Universities Nuclear Laboratory

  • Robert V.F. V Janssens

    University of North Carolina at Chapel Hill, University of North Carolina at Chapel Hill, Triangle Universities Nuclear Laboratory

  • B. Alex Brown

    Michigan State University, Michigan State University, Facility for Rare Isotope Beams

  • Sean W Finch

    Duke University

  • FNU Krishichayan

    Duke University, Duke University, Triangle Universities Nuclear Laboratory

  • David R Little

    University of North Carolina at Chapel Hill, Triangle Universities Nuclear Laboratory

  • Sharmistha Mukhopadhyay

    University of Kentucky

  • Erin E Peters

    U of Kentucky

  • Anthony Paul D Ramirez

    Lawrence Livermore National Laboratory, LLNL

  • Jack A Silano

    Lawrence Livermore National Laboratory

  • Anton P Tonchev

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

  • Steven W Yates

    University of Kentucky