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PreprintCC BY 4.0arXiv

B4/2 anomaly related to the shape coexistence in 94Zr

  • P. Buganu
  • R. Benjedi
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Abstract

Solutions of the Bohr-Mottelson Hamiltonian with a sixth-order anharmonic oscillator potential, for both axially-symmetric and γ-unstable deformations, are applied to investigate the lowest states of the 94Zr nucleus. The experimentally observed B4/2 anomaly is explained, within the present approach, by the presence of a coexistence between an approximately spherical shape (21+) and an axially-symmetric deformed one (41+). On the other hand, the energies of the 02+ and 22+ states and their associated electromagnetic transitions fit better a dynamical triaxial deformation configuration (γ-unstable). This overall picture of the lowest states in 94Zr corresponds to a triple shape coexistence scenario.

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Cite

BibTeXRIS
BibTeX
@misc{buganu2026anomaly,
  title = {{B$_4/2$ anomaly related to the shape coexistence in $^94$Zr}},
  author = {P. Buganu and R. Benjedi},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.29799},
  eprint = {2610.29799},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.29799},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - B_4/2 anomaly related to the shape coexistence in ^94Zr
AU  - P. Buganu
AU  - R. Benjedi
PY  - 2026
DA  - 2026/10/21
PB  - arXiv
DO  - 10.48550/arxiv.2610.29799
UR  - https://arxiv.org/abs/2610.29799
AB  - Solutions of the Bohr-Mottelson Hamiltonian with a sixth-order anharmonic oscillator potential, for both axially-symmetric and γ-unstable deformations, are applied to investigate the lowest states of the ^94Zr nucleus. The experimentally observed B_4/2 anomaly is explained, within the present approach, by the presence of a coexistence between an approximately spherical shape (2_1^+) and an axially-symmetric deformed one (4_1^+). On the other hand, the energies of the 0_2^+ and 2_2^+ states and their associated electromagnetic transitions fit better a dynamical triaxial deformation configuration (γ-unstable). This overall picture of the lowest states in ^94Zr corresponds to a triple shape coexistence scenario.
ER  -