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Multiple reflection-asymmetric-type band structures in 220Th and dinuclear model

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Abstract.

The negative-parity bands with different values of K in 220Th are analysed within the dinuclear system model which was previously used for describing the ground-state alternating-parity bands with K = 0 in deformed actinides. The model is based on the assumption that the cluster type shapes are produced by the collective motion in the mass-asymmetry coordinate. To describe the reflection-asymmetric collective modes characterized by the nonzero values of K , the intrinsic excitations of clusters are taken into account. The observed excitation spectrum, angular-momentum dependence of the parity splitting and the staggering behaviour of the B(E1)/B(E2) ratios are explained.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, 141980, Dubna, Russia

    T. M. Shneidman, G. G. Adamian, N. V. Antonenko & R. V. Jolos

  2. Institut für Theoretische Physik der Justus-Liebig-Universität, D-35392, Giessen, Germany

    W. Scheid

Authors
  1. T. M. Shneidman
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  2. G. G. Adamian
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  3. N. V. Antonenko
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  4. R. V. Jolos
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  5. W. Scheid
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Communicated by A. Schwenk

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Shneidman, T.M., Adamian, G.G., Antonenko, N.V. et al. Multiple reflection-asymmetric-type band structures in 220Th and dinuclear model. Eur. Phys. J. A 47, 34 (2011). https://doi.org/10.1140/epja/i2011-11034-3

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  • DOI: https://doi.org/10.1140/epja/i2011-11034-3

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