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

被引：0
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作者：
T. M. Shneidman
G. G. Adamian
N. V. Antonenko
R. V. Jolos
W. Scheid
机构：
[1] Joint Institute for Nuclear Research,
[2] Institut für Theoretische Physik der Justus-Liebig-Universität,undefined
来源：
The European Physical Journal A | 2011年 / 47卷
关键词：
Angular Momentum; Heavy Fragment; Light Fragment; Dinuclear System; Heavy Cluster;
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摘要：
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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