β-decay feeding intensity distributions for Nb103,104m

J. Gombas, P. A. DeYoung, A. Spyrou, A. C. Dombos, A. Algora, T. Baumann, B. Crider, J. Engel, T. Ginter, E. Kwan, S. N. Liddick, S. Lyons, F. Naqvi, E. M. Ney, J. Pereira, C. Prokop, W. Ong, S. Quinn, D. P. Scriven, A. Simon, and C. Sumithrarachchi
Phys. Rev. C 103, 035803 – Published 3 March 2021

Abstract

The β decays of Nb103,104m were studied with the Summing NaI(Tl) (SuN) detector at the National Superconducting Cyclotron Laboratory. The β-decay feeding intensity distribution Iβ(E) for each isotope was extracted by measuring γ rays in coincidence with an emitted electron. The Iβ(E) was extracted via the total absorption spectroscopy technique. The Iβ(E) for each nucleus was compared to predictions made by the quasiparticle random-phase approximation (QRPA) model which is commonly used to calculate β-decay properties for astrophysical applications. The main goal was to provide experimental data for neutron-rich nuclei, relevant to the astrophysical r process. In addition, the extracted β-decay feeding intensity distributions can lead to a better understanding of nuclear structure in a region of rapid structure changes around A=100. Finally, experimental data for Nb104m are also of interest to antineutrino studies of nuclear reactors.

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  • Received 8 June 2020
  • Accepted 16 February 2021

DOI:https://doi.org/10.1103/PhysRevC.103.035803

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

J. Gombas1,2,*, P. A. DeYoung1,†, A. Spyrou2,3,4,‡, A. C. Dombos2,3,4, A. Algora5,6, T. Baumann3, B. Crider3, J. Engel7, T. Ginter3, E. Kwan3, S. N. Liddick3,4,8, S. Lyons3,4,§, F. Naqvi3,4, E. M. Ney7, J. Pereira3,4, C. Prokop3,8, W. Ong3,2,4, S. Quinn2,3,4, D. P. Scriven2, A. Simon9, and C. Sumithrarachchi3

  • 1Department of Physics, Hope College, Holland, Michigan 49422, USA
  • 2Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 3National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 4Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
  • 5Instituto de Física Corpuscular, CSIC–Universidad de Valencia, E-46071 Valencia, Spain
  • 6Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen H-4026, Hungary
  • 7Department of Physics, University of North Carolina, Chapel Hill, North Carolina 27514, USA
  • 8Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
  • 9Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556, USA

  • *gombasja@msu.edu
  • deyoung@hope.edu
  • spyrou@frib.msu.edu
  • §Present address: Pacific Northwest National Laboratory, Richland, WA 99354, USA.

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Vol. 103, Iss. 3 — March 2021

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