A1 Journal article (refereed)
First candidates for γ vibrational bands built on the [505]11/2− neutron orbital in odd-A Dy isotopes (2020)

Majola, S. N. T., Sithole, M. A., Mdletshe, L., Hartley, D., Timár, J., Nyakó, B. M., Allmond, J. M., Bark, R. A., Beausang, C., Bianco, L., Bucher, T. D., Bvumbi, S. P., Carpenter, M. P., Chiara, C. J., Cooper, N., Cullen, D. M., Curien, D., Dinoko, T. S., Gall, B. J. P., . . . Zimba, G. (2020). First candidates for γ vibrational bands built on the [505]11/2− neutron orbital in odd-A Dy isotopes. Physical Review C, 101(4), Article 044312. https://doi.org/10.1103/PhysRevC.101.044312

JYU authors or editors

Publication details

All authors or editors: Majola, S. N. T.; Sithole, M. A.; Mdletshe, L.; Hartley, D.; Timár, J.; Nyakó, B. M.; Allmond, J. M.; Bark, R. A.; Beausang, C.; Bianco, L.; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2020

Volume: 101

Issue number: 4

Article number: 044312

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.101.044312

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/68670

Abstract

Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the 155Gd(α,2n)157Dy and 148Nd(12C,5n)155Dy reactions at 25 and 65 MeV, respectively. We report high-K bands, which are conjectured to be the first candidates of a Kπ=2+γ vibrational band, built on the [505]11/2− neutron orbital, in both odd-A155,157Dy isotopes. The coupling of the first excited K=0+ states or the so-called β vibrational bands at 661 and 676 keV in 154Dy and 156Dy to the [505]11/2− orbital, to produce a Kπ=11/2− band, was not observed in both 155Dy and 157Dy, respectively. The implication of these findings on the interpretation of the first excited 0+ states in the core nuclei 154Dy and 156Dy are also discussed.

Keywords: nuclear physics; particle physics

Free keywords: collective levels; nuclear fusion; nuclear reactions; nuclear spin and parity; nuclear structure and decays; shell model

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2020

JUFO rating: 2