Transition from the Seniority to the Anharmonic Vibrator Regime in Nuclei

Details Transition from the Seniority to the Anharmonic Vibrator Regime in Nuclei Transition from the Seniority to the Anharmonic Vibrator Regime in Nuclei

1996-11-07

arxiv.org/abs/nucl-th/9611015v1

Phys. Rev. C 55 (1997) 585

Physics

Nuclear Physics

Nuclear Theory

9 pages with 2 tables, submitted to Physical Review C, November 1996

Scientific paper

10.1103/PhysRevC.55.R585

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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