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

  • T. M. Shneidman
  • G. G. Adamian
  • N. V. Antonenko
  • R. V. Jolos
  • W. Scheid
Regular Article - Theoretical Physics

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.

Keywords

Angular Momentum Heavy Fragment Light Fragment Dinuclear System Heavy Cluster 
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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • T. M. Shneidman
    • 1
  • G. G. Adamian
    • 1
  • N. V. Antonenko
    • 1
  • R. V. Jolos
    • 1
  • W. Scheid
    • 2
  1. 1.Joint Institute for Nuclear ResearchDubnaRussia
  2. 2.Institut für Theoretische Physik der Justus-Liebig-UniversitätGiessenGermany

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