Unexpected distribution of ν1f7/2 strength in Ca 49

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  • Crawford, H.L.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Macchiavelli, A.O.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Fallon, P.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Albers, M.
    • Other Affiliation: Argonne National Laboratory
  • Bader, V.M.
    • Other Affiliation: Michigan State University
  • Bazin, D.
    • Other Affiliation: Michigan State University
  • Campbell, C.M.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Clark, R.M.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Cromaz, M.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Dilling, J.
    • Other Affiliation: TRIUMF
  • Gade, A.
    • Other Affiliation: Michigan State University
  • Gallant, A.
    • Other Affiliation: TRIUMF
  • Holt, J.D.
    • Other Affiliation: TRIUMF
  • Janssens, R.V.F.
    • College of Arts and Sciences, Department of Physics and Astronomy
    • Other Affiliation: Argonne National Laboratory
  • Krücken, R.
    • Other Affiliation: TRIUMF
  • Langer, C.
    • Other Affiliation: Michigan State University
  • Lauritsen, T.
    • Other Affiliation: Argonne National Laboratory
  • Lee, I.Y.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Menéndez, J.
    • Other Affiliation: University of Tokyo
  • Noji, S.
    • Other Affiliation: Michigan State University
  • Paschalis, S.
    • Other Affiliation: Technische Universität Darmstadt
  • Recchia, F.
    • Other Affiliation: Michigan State University
  • Rissanen, J.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Schwenk, A.
    • Other Affiliation: Technische Universität Darmstadt
  • Scott, M.
    • Other Affiliation: Michigan State University
  • Simonis, J.
    • Other Affiliation: Technische Universität Darmstadt
  • Stroberg, S.R.
    • Other Affiliation: Michigan State University
  • Tostevin, J.A.
    • Other Affiliation: University of Surrey
  • Walz, C.
    • Other Affiliation: Technische Universität Darmstadt
  • Weisshaar, D.
    • Other Affiliation: Michigan State University
  • Wiens, A.
    • Other Affiliation: Lawrence Berkeley National Laboratory
  • Wimmer, K.
    • Other Affiliation: University of Tokyo
  • Zhu, S.
    • Other Affiliation: Argonne National Laboratory
Abstract
  • The calcium isotopes have emerged as a critical testing ground for new microscopically derived shell-model interactions, and a great deal of experimental and theoretical focus has been directed toward this region. We investigate the relative spectroscopic strengths associated with 1f7/2 neutron hole states in Ca47,49 following one-neutron knockout reactions from Ca48,50. The observed reduction of strength populating the 7/21- state in Ca49, as compared to Ca47, is inconsistent with shell-model calculations using both phenomenological interactions such as GXPF1, and interactions derived from microscopically based two- and three-nucleon forces. The result suggests a fragmentation of the l=3 strength to higher-lying states as suggested by the microscopic calculations, but the observed magnitude of the reduction is not reproduced in any shell-model description.
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  • Article
Rights statement
  • In Copyright
Journal title
  • Physical Review C
Journal volume
  • 95
Journal issue
  • 6
Language
  • English
Version
  • Publisher
ISSN
  • 2469-9985
Publisher
  • American Physical Society

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