Total Absorption Spectroscopy of <sup>75</sup>Ni β Decay

ORAL

Abstract

The rapid neutron capture process (r-process) is responsible for the synthesis of roughly half of the trans-iron elemental abundance. Its accurate modeling relies on nuclear data including masses, neutron-capture cross sections, β-decay half-lives, and β-delayed neutron emission probabilities [1]. Experimental information on the decay properties of neutron-rich nuclei along the r-process path remains limited, necessitating the use of theoretical models. One sensitive benchmark for these models is to compare predicted and measured β-decay strength functions. In this work, the β decay of 75Ni was studied using the Summing NaI(Tl) (SuN) Total Absorption Spectrometer [2] at the National Superconducting Cyclotron Laboratory (NSCL). The β-decay strength of 75Ni was determined using total absorption spectroscopy (TAS), which can provide a more complete picture than traditional high-resolution γ-ray spectroscopy. This measurement complements previous TAS studies on neighboring nuclei [3-4] and enhances our understanding of decay behavior in this region. Results from the TAS analysis of 75Ni will be presented.

[1] M. R. Mumpower et al., Prog. Part. Nucl. Phys. 86, 86 (2016)

[2] A. Simon et al., Nucl. Instr. Meth. Phys. Res. A 703, 16 (2013)

[3] C. F. Persch et al., Phys. Rev. C 103, (2021)

[4] F. Naqvi et al., Nucl. Phys. A 1018, (2022)

*This work is supported in part by the U.S. DOE under Contract DE-SC0020451, DE-SC0023633, DE-AC52-07NA27344 and the NNSA under DE-NA0003180 and the SSAA through DE-NA0003906.

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Presenters

  • Jessica M Berkman

    • Michigan State University
    • Facility for Rare Isotope Beams; Department of Chemistry, Michigan State University

Authors

  • Jessica M Berkman

    • Michigan State University
    • Facility for Rare Isotope Beams; Department of Chemistry, Michigan State University

  • Rebecca Lewis

    • Facility for Rare Isotope Beams; Department of Chemistry, Michigan State University

  • Sean N Liddick

    • Facility for Rare Isotope Beams, Michigan State University
    • Facility for Rare isotope Beams; Department of Chemistry, Michigan State University

  • Mejdi J Mogannam

    • Michigan State University
    • Facility for Rare Isotope Beams; Department of Chemistry, Michigan State University

  • Ellie K Ronning

    • MSU
    • Facility for Rare Isotope Beams; Department of Chemistry, Michigan State University

  • Artemis Spyrou

    • Facility for Rare Isotope Beams, Michigan State University
    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Michigan State University

  • Stephanie M Lyons

    • Pacific Northwest National Laboratory (PNNL)

  • Aaron Chester

    • Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA

  • Darren L Bleuel

    • Lawrence Livermore National Laboratory

  • Katherine Childers

    • Nevada National Security Site

  • Benjamin P Crider

    • Mississippi State University

  • Alex C Dombos

    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Michigan State University

  • Magne Guttormsen

    • University of Oslo

  • Caley Harris

    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Michigan State University

  • Ann-Cecilie Larsen

    • University of Oslo

  • Alicia R Palmisano

    • University of Tennessee

  • Andrea L Richard

    • Ohio University
    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Ohio University

  • Debra Richman

    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Michigan State University

  • Nicholas David Scielzo

    • Lawrence Livermore National Laboratory

  • Anna Simon

    • University of Notre Dame

  • Mallory K Smith

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

  • Antonius Torode

    • Department of Physics and Astronomy, Michigan State University

  • Adriana Sweet

    • Lawrence Livermore National Laboratory

  • Remco G.T. Zegers

    • Michigan State University/FRIB
    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Michigan State University