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Mass measurement of neutron-rich isotopes from51Ca to72Ni

  • Nuclear Structure and Reactions
  • Published:
Zeitschrift für Physik A Hadrons and Nuclei

Abstract

The ground state masses of thirty-nine neutronrich nuclei from51Ca to72Ni have been measured using the Time-of-Flight Isochronous (TOFI) spectrometer. Eight of these masses have been measured for the first time and thirty-one are remeasurements of neutron-rich nuclei previously reported. Good agreement between these results and a previous TOFI experiment was observed except for the most neutron-rich isotopes of vanadium through iron with the present results being more bound and in better agreement with theory. The low binding energy of68Ni, as indicated by an unreasonably low two-neutron separation energy, suggests the presence of a high-lying, long-lived isomeric state in this nucleus.

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Author notes

  1. X. G. Zhou & X. L. Tu

    Present address: Texas A&M University, 77843-3366, College Station, TX, USA

Authors and Affiliations

  1. II. Physikalisches Institut, Justus-Liebig-Universität, D-35392, Giessen, Germany

    H. L. Seifert & H. Wollnik

  2. Los Alamos National Laboratory, 87545, Los Alamos, NM, USA

    H. L. Seifert, J. M. Wouters, D. J. Vieira, X. G. Zhou, X. L. Tu & G. W. Butler

  3. Utah State University, 84322, Logan, UT, USA

    X. G. Zhou, X. L. Tu & Z. Y. Zhou

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  1. H. L. Seifert
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  2. J. M. Wouters
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  3. D. J. Vieira
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  5. X. G. Zhou
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Additional information

Part of dissertation (D26)

It is a pleasure to acknowledge the technical help of the LAMPF engineering, electronics, and operations groups. We wish to also thank P. Möller, J.R. Nix, B.A. Brown for many valuable discussions and K.E.G. Löbner for the continued use of the Bragg curve gas ionization counter. This work was performed under the auspices of the US Department of Energy.

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Seifert, H.L., Wouters, J.M., Vieira, D.J. et al. Mass measurement of neutron-rich isotopes from51Ca to72Ni. Z. Physik A - Hadrons and Nuclei 349, 25–32 (1994). https://doi.org/10.1007/BF01296329

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  • DOI: https://doi.org/10.1007/BF01296329

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