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Use of a CeBr<sub>3</sub> implantation scintillator for fast-timing measurements in beta-decay studies of rare isotopes near the N=20 island of inversion

ORAL

Abstract

Understanding changes in nuclear structure as a function of proton and neutron number is critical to develop a predicative model of the atomic nucleus. Nuclear transition rates can be used as sensitive probes of underlying nuclear configurations. One method to measure longer-lived half-lives is through the direct measurement of the time delay between two emitted radiations following β decay. A β-decay experiment was performed at the National Superconducting Cyclotron Laboratory (NSCL) where radioactive nuclei were implanted within a thin CeBr3 scintillator and a variety of states in daughter nuclei were subsequently populated. The CeBr3 scintillator, coupled to a position-sensitive photomultiplier tube (PSPMT) was chosen due to its superior energy resolution compared to thick plastic scintillators which were used in previous experiments. Sixteen high-purity Ge detectors were situated around the CeBr3 for γ-ray detection as well as 15 LaBr3(Ce) detectors ideal for fast-timing measurements. Preliminary results obtained using β-γ, β-γ-γ and γ-γ timing methods will be presented.

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Presenters

  • Timilehin H Ogunbeku

    Mississippi State University, Department of Physics and Astronomy, Mississippi State University

Authors

  • Timilehin H Ogunbeku

    Mississippi State University, Department of Physics and Astronomy, Mississippi State University

  • Benjamin P Crider

    Mississippi State Univ, Mississippi State University, Department of Physics and Astronomy, Mississippi State University

  • Sean N Liddick

    National Superconducting Cyclotron Laboratory, Michigan State University, NSCL/FRIB, NSCL, National Superconducting Cyclotron Laboratory; Department of Chemistry, Michigan State University, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Aaron Chester

    Michigan State University, National Superconducting Cyclotron Laboratory

  • Katherine L Childers

    Michigan State University, NSCL/FRIB, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Partha Chowdhury

    University of Massachusetts Lowell

  • Edward Lamere

    University of Massachusetts Lowell

  • Rebecca Lewis

    Michigan State University, NSCL/FRIB, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Brenden Longfellow

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

  • Stephanie Lyons

    Pacific Northwest National Laboratory, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Shree K Neupane

    University of Tennessee, University of Tennessee, Knoxville

  • David Perez-Loureiro

    University of Tennessee, Michigan State University

  • Christopher J Prokop

    Los Alamos National Laboratory

  • Andrea L Richard

    Lawrence Livermore Natl Lab, National Superconducting Cyclotron Labor, Lawrence Livermore National Laboratory

  • Umesh Silwal

    University of Wyoming

  • Durga P Siwakoti

    Mississippi State Univ

  • Dylan C Smith

    Mississippi State University

  • Mallory K Smith

    Michigan State University, NSCL/FRIB, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB, Michigan State University, NSCL

  • Yongchi Xiao

    Department of Chemistry, University of Kentucky, Michigan State University, University of Kentucky