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Coincidence Doppler shift lifetime measurements in 73,74Se and 74Br using the EUROBALL Cluster cube array

  • Nuclear structure and reactions
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The European Physical Journal A - Hadrons and Nuclei Aims and scope Submit manuscript

Abstract:

Subpicosecond lifetimes of high spin states in the rotational nuclei 73Se, 74Se and 74Br have been measured using the 58Ni +19F compound reaction and the Doppler Shift Attenuation method. Six EUROBALL Cluster detectors arranged in cube geometry allowed us to select the relevant transitions in γγ coincidence mode. The high counting statistics achieved in this setup also facilitated the determination of average sidefeeding times, which were found to agree rather well with the results of Monte-Carlo calculations of the particle and γ-ray evaporation process. The deduced quadrupole strengths and deformations are compared with the results of previous measurements and the predictions of Cranked Shell Model calculations. In 74Br, a large and constant prolate deformation of β2= 0.37(1) was found for the presumed 4+ and 3− two-quasiparticle bands.

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Authors and Affiliations

  1. II. Physikalisches Institut, Universität Göttingen, Bunsenstrasse 7–9, 37073 Göttingen, Germany, , , , , , DE

    R. Loritz, O. Iordanov, E. Galindo, A. Jungclaus, D. Kast, K.P. Lieb, C. Teich & F. Cristancho

  2. Max-Planck-Institut für Kernphysik, 69029 Heidelberg, Germany, , , , , , DE

    Ch. Ender, T. Härtlein, F. Köck & D. Schwalm

Authors
  1. R. Loritz
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  2. O. Iordanov
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  3. E. Galindo
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  4. A. Jungclaus
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  5. D. Kast
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  6. K.P. Lieb
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  7. C. Teich
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  8. F. Cristancho
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  9. Ch. Ender
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  10. T. Härtlein
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  11. F. Köck
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  12. D. Schwalm
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Received: 2 July 1999

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Loritz, R., Iordanov, O., Galindo, E. et al. Coincidence Doppler shift lifetime measurements in 73,74Se and 74Br using the EUROBALL Cluster cube array . Eur. Phys. J. A 6, 257–268 (1999). https://doi.org/10.1007/s100500050344

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  • DOI: https://doi.org/10.1007/s100500050344

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