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Study of spontaneous fission with EUROGAM

Shape transition in A~100 Sr and Zr nuclei

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Zeitschrift für Physik A Hadrons and nuclei

Abstract

Prompt γ radiation following spontaneous fission has been measured using the EUROGAM 2 array. Using these data and newly developed analysis techniques a number of subjects were studied, which are briefly discussed. One of these subjects, shape transition in A≈100 Sr and Zr nuclei is discussed in more detail. Quadrupole moments were determined for rotational bands in the N=58,59,60,62 and 64 Sr and Zr isotopes. Deformation parameters, which increase from β2 ≈ 0.1 at N=56 to β2 ≈ 0.4 at N=64, suggest that in strontium and zirconium isotopes shape change happens gradually between N=56 and N=62 and is probably due to an occupancy of three or more deformation-driving orbitals of h11/2 parentage.

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Authors and Affiliations

  1. Schuster Laboratory, Department of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK

    W. Urban, J.L. Durell, W.R. Phillips, A.G. Smith, M.A. Jones, A.R. Barnett, S.J. Dorning, M.J. Leddy, T. Rzaca-Urban, R.A. Sareen & B.J. Varley

  2. Argonne National Laboratory, Argonne, IL, 60439, USA

    I. Ahmad & L.R. Morss

  3. Centre de Recherches Nucléaires, IN2P3-CNRS/Université Louis Pasteur, F-67037, Strasbourg, France

    M. Bentaleb, E. Lubkiewicz & N. Schulz

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Communicated by D. Schwalm

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Urban, W., Durell, J., Phillips, W. et al. Study of spontaneous fission with EUROGAM. Z. Phys. A 358, 145–151 (1997). https://doi.org/10.1007/s002180050291

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