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Transition from the Seniority to the Anharmonic Vibrator Regime in Nuclei

R. Bijker·A. Frank·S. Pittel
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Abstract

A recent analysis of experimental energy systematics suggests that all collective nuclei fall into one of three classes -- seniority, anharmonic vibrational, or rotational -- with sharp phase transitions between them. We investigate the transition from the seniority to the anharmonic vibrator regime within a shell model framework involving a single large j-orbit. The calculations qualitatively reproduce the observed transitional behavior, both for U(5) like and O(6) like nuclei. They also confirm the preeminent role played by the neutron-proton interaction in producing the phase transition.

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R. Bijker, A. Frank, S. Pittel. 1996-11-07. Transition from the Seniority to the Anharmonic Vibrator Regime in Nuclei. https://doi.org/10.1103/physrevc.55.r585

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