Coexisting single-particle excitations and octupole correlations in transitional nucleus $\mathbf{^{217}Ra}$
- Resource Type
- Working Paper
- Authors
- Madhu; Deo, A. Y.; Yadav, Khamosh; Sahoo, Dhananjaya; Wang, Y. Y.; Wang, Y. K.; Meng, J.; Suman, Saket; Tandel, S. K.; Sharma, A.; Ahmed, I.; Katre, K.; Devi, K. Rojeeta; Dutt, S.; Kumar, S.; Yashraj; Muralithar, S.; Singh, R. P.
- Source
- Physical Review C 108, 014309 (2023)
- Subject
- Nuclear Experiment
Nuclear Theory
- Language
The level structure of the transitional nucleus $\mathrm{^{217}Ra}$ has been extended with the addition of around 20 new transitions. The discrepancies between the placements of several transitions reported in the earlier studies are resolved. The newly-established negative-parity sequence at low excitation energies hints at the expected parity-doublet structures in this nucleus. The properties of the observed simplex bands are compared with that of similar bands in neighboring nuclei. Since the presence of parity-doublet structures reflect octupole correlations, theoretical calculations using reflection-asymmetric triaxial particle rotor model (RAT-PRM) have been performed. A comparison of the observed features of the simplex bands with the predictions of the RAT-PRM calculations suggests that $\mathrm{^{217}Ra}$ exhibits an intermediate the behavior between the extremes of spherical and octupole-deformed nuclei. The termination of the simplex bands at intermediate energies and the structures lying above reflect the dominance of the single-particle excitations at higher excitation energies.
Comment: 15 pages, 16 figures