APS Logo

Nuclear Resonance Fluorescence in <sup>74</sup>Ge

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.

–

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