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arXiv · 2302.07610

Quadrupole and octupole states in $^{152}$Sm using the proton-neutron interacting boson model

Bao-Yue Hu·Yu Zhang·Gui-Xiu Na·Sheng-Nan Wang·Wei Teng
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Abstract

A scheme of solving the proton-neutron interacting boson model (IBM-2) in terms of the SU(3) basis is introduced, by which the IBM-2 coupled with an octupole boson is applied to describe the low-energy structure of the critical point nucleus, $^{152}$Sm. The results indicate that the spectral properties of both the positive-parity bands and negative-parity bands in this nucleus can be well captured by the IBM-2 calculations through a simple Hamiltonian, thus providing an example of the IBM-2 in a unified description of quadrupole and octupole states in a transitional system. In addition, a statistical analysis of the low-spin states in the model is also provided.

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Bao-Yue Hu, Yu Zhang, Gui-Xiu Na, Sheng-Nan Wang, Wei Teng. 2023-02-15. Quadrupole and octupole states in $^{152}$Sm using the proton-neutron interacting boson model. https://doi.org/10.1088/1361-6471%2Facb282

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