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Evolution of collectivity in a ground–-band mixing scheme for even–even transitional nuclei

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Abstract:

We propose an extended band-mixing formalism capable of describing the structure of the ground- and -bands in a wide range of collective spectra beyond the regions of well-deformed nuclei. We apply it to explain the odd–even staggering effect observed in the -bands of Mo, Ru and Pd nuclei and to obtain on this basis a consistent interpretation of new experimental data in the neutron rich region. As a result the systematic behaviour of the staggering effect, together with the mutual ground–-band disposition, interband mixing and intraband level spacing are explained as the manifestation of respective changes in nuclear collectivity.

Document Type: Research Article

DOI: https://doi.org/10.1088/0954-3899/31/5/013

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