Beta-delayed neutron emission of <sup>70,71,72</sup>Co

ORAL

Abstract

Beta-decay strength measurements are required to constrain the nuclear models, which aim to predict nuclear lifetimes and decay branching ratios. Recently, this became an important research topic, especially for neutron-rich nuclei, relevant to the r-process. We studied beta delayed neutron emission of neutron-rich cobalt isotopes to (Z=28) nickel nuclei to complete the strength distribution measurements which previously used gamma-ray spectroscopy methods. The neutron emission was investigated with the VANDLE neutron time of flight detector array at NSCL. Neutron energy spectra and emission probabilities were obtained, and beta-n-gamma coincidences where they could be determined. The obtained beta-delayed neutron emission for the decays of the nuclei Co-70,71,72 are interpreted using a newly developed framework that combines shell-model and statistical-model calculations.

*This research was sponsored in part by the Office of Nuclear Physics, U.S. Department of Energy under Award No. DE-FG02-96ER40983 and by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DE-NA0002132.

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Presenters

  • Kevin Siegl

    • University of Tennessee

Authors

  • Kevin Siegl

    • University of Tennessee

  • Andrew M Keeler

    • University of Tennessee

  • Robert Grzywacz

    • University of Tennessee
    • University of Tennessee and Oak Ridge National Laboratory

  • Stan V Paulauskas

    • University of Tennessee

  • Thomas T King

    • ORNL
    • Oak Ridge National Laboratory
    • Oak Ridge National Lab
    • University of Tennessee

  • Steven Z Taylor

    • University of Tennessee

  • Christopher J Zachary

    • Vanderbilt Univ

  • Benjamin P Crider

    • Mississippi State University

  • Nathan T Brewer

    • Oak Ridge National Laboratory

  • S. Go

    • University of Tennessee

  • Miguel Madurga

    • University of Tennessee

  • Enhong Wang

    • Vanderbilt Univ

  • Alexandra Fijalkowska

    • Rutgers 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

  • Mustafa M Rajabali

    • Tennessee Technological University

  • Joseph H Hamilton

    • Vanderbilt Univ

  • Patrick O'Malley

    • University of Notre Dame

  • Matthew Hall

    • University of Notre Dame