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Fast-timing measurements between LaBr<sub>3</sub>(Ce) detectors in the neutron-rich N = 20 region

ORAL

Abstract

Changes in nuclear shell structure can occur due to varying proton and neutron numbers inside the nucleus. Sensitive probes to those changes, so-called “nuclear shell evolution”, are nuclear transition rates, which depend in part on understanding the level lifetimes. The National Superconducting Cyclotron Laboratory (NSCL) conducted a β decay experiment in the neutron-rich N = 20 region where radioactive nuclei were implanted into a CeBr3 scintillator coupled to a Position-Sensitive Photomultiplier Tube (PSMPT), which offered the ability to correlate the decays to the implanted ions using spatial and temporal techniques. 15 LaBr3(Ce) detectors were used for γ radiation detection and to provide fast timing measurement, with time-difference spectra generated for β-delayed γ radiation following a decay event to measure half-lives. Corrections for the energy-dependent time-walk effects and validation results in the neutron-rich N = 20 region will be presented.

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Presenters

  • Tawfik M Gaballah

    Mississippi State University

Authors

  • Tawfik M Gaballah

    Mississippi State University

  • Benjamin P Crider

    Mississippi State University

  • Sean N Liddick

    Facility for Rare Isotope Beams, Michigan State University, NSCL Michigan State University, Michigan State University (MSU), FRIB, Facility for Rare Isotope Beams, Michigan State University

  • Aaron Chester

    Michigan State University, Simon Fraser University

  • Katherine L Childers

    Michigan State University, Texas A&M University

  • Partha Chowdhury

    University of Massachusetts Lowell

  • Edward Lamere

    University of Massachusetts Lowell

  • Rebecca Lewis

    Michigan State University, Zeno Power

  • Brenden R Longfellow

    Lawrence Livermore Natl Lab, NSCL Michigan State University, Lawrence Livermore National Laboratory

  • Stephanie M Lyons

    Pacific Northwest National Laboratory, Michigan State University, NSCL Michigan State University, Pacific Northwest National Lab, Pacific Northwestern National Laboratory, FRIB

  • Shree K Neupane

    University of Tennessee

  • David Perez-Loureiro

    University of Tennessee, University of Tennessee, Knoxville

  • Christopher J Prokop

    Los Alamos National Laboratory

  • Andrea Richard

    Michigan State University

  • Umesh M Silwal

    Mississippi State University

  • Timilehin H Ogunbeku

    Mississippi State University

  • Durga P Siwakoti

    Mississippi State Univ

  • Dylan C Smith

    Mississippi State University

  • Mallory K Smith

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

  • Yongchi Xiao

    University of Kentucky, Michigan State University, Mississippi State University