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Decays of\((vh_{11/2} ^n )^{10 + } \) and\((\pi d_{5/2} vh_{11/2} ^n )^{25/2 + } \) isomers in even-A Sn and odd-A Sb nuclei

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Zeitschrift für Physik A Atomic Nuclei

Abstract

Isomeric decays in116, 118, 120Sn and119, 120Sb have been studied by measurements of delayedγ-rays following reactions of 26–40 MeV7Li ions on Cd targets. A 6.3 μs isomer of\((vh_{11/2} ^n )^{10 + } \) character in120Sn is reported. The experimental variation inB(E2, 10+ → 8+) between\(vh_{11/2} ^n \) states in116, 118, 120, 128, 130Sn is compared with the expected dependence on vh11/2 subshell occupation number. Isomerism in Sb nuclei is also discussed, and a known high-spin isomer in119Sb is assigned the same seniority-three configuration\((\pi d_{5/2} vh_{11/2} ^n )^{25/2 + } \) as a well-established 340 μs isomer in117Sb.

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Authors and Affiliations

  1. Dipartimento di Fisica dell'Università and INFN-Sezione di Padova, Italy

    S. Lunardi, P. J. Daly, F. Soramel & C. Signorini

  2. INFN-Laboratori Nazionali di Legnaro, Italy

    B. Fornal, G. Fortuna & A. M. Stefanini

  3. Institute of Nuclear Physics, Cracow, Poland

    R. Broda & W. Meczynski

  4. Research Institute of Physics, Stockholm, Sweden

    J. Blomqvist

Authors
  1. S. Lunardi
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  2. P. J. Daly
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  3. F. Soramel
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  4. C. Signorini
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  5. B. Fornal
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  6. G. Fortuna
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  7. A. M. Stefanini
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  8. R. Broda
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  9. W. Meczynski
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  10. J. Blomqvist
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Additional information

On leave from Purdue University, W. Lafayette, IN 47907, U.S.A., partially supported by the U.S. Department of Energy

On leave from Institute of Nuclear Physics, PI-31342 Cracow, Poland

We thank David Fossan for additional information about the Stonybrook117Sb and119Sb measurements.

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Lunardi, S., Daly, P.J., Soramel, F. et al. Decays of\((vh_{11/2} ^n )^{10 + } \) and\((\pi d_{5/2} vh_{11/2} ^n )^{25/2 + } \) isomers in even-A Sn and odd-A Sb nuclei. Z. Physik A - Atomic Nuclei 328, 487–492 (1987). https://doi.org/10.1007/BF01289635

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  • DOI: https://doi.org/10.1007/BF01289635

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