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Direct mass measurements of the neutron-rich light isotopes of lithium through fluorine

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Zeitschrift für Physik A Atomic Nuclei

Abstract

The direct mass measurements of the neutron-rich nuclei11Li,14Be,17B,19–20C,20–22N,23–24O, and25–27F have been performed using the Time-of-Flight Isochronous (TOFI) spectrometer. We observe a notable drop in the two-neutron separation energies for the oxygen and fluorine isotopes afterN=15. This behavior is interpreted using the shell model.

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Author notes

  1. R. H. Kraus Jr.

    Present address: Los Alamos National Laboratory, 87545, Los Alamos, NM, USA

Authors and Affiliations

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

    J. M. Wouters, D. J. Vieira & G. W. Butler

  2. Clark University, Worcester, MA, USA

    R. H. Kraus Jr.

  3. Sektion Physik, Universität München, Garching, Federal Republic of Germany

    K. E. G. Löbner

Authors
  1. J. M. Wouters
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  2. R. H. Kraus Jr.
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  3. D. J. Vieira
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  4. G. W. Butler
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  5. K. E. G. Löbner
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Additional information

It is a pleasure to acknowledge technical help from Larry Ulibarri and the LAMPF engineering, electronics, and operations groups. We thank B.H. Wildenthal for providing several USD model calculations and for many valuable discussions. We also thank B.A. Brown for his binding energy calculations. R.H.K. acknowledges support from Prof. D.S. Benner and Clark University. K.E.G.L. expresses thanks to the TOFI group for their hospitality and to LANL and Deutsche Forschungsgemeinschaft for financial support during his sabbatical leave. This work was performed under the auspices of the US Department of Energy.

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Wouters, J.M., Kraus, R.H., Vieira, D.J. et al. Direct mass measurements of the neutron-rich light isotopes of lithium through fluorine. Z. Physik A - Atomic Nuclei 331, 229–233 (1988). https://doi.org/10.1007/BF01355591

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  • DOI: https://doi.org/10.1007/BF01355591

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