A1 Journal article (refereed)
Spectroscopy of low-spin states in 157Dy : Search for evidence of enhanced octupole correlations (2019)

Majola, S. N. T., Bark, R. A., Bianco, L., Bucher, T. D., Bvumbi, S. P., Cullen, D. M., Garrett, P. E., Greenlees, P. T., Hartley, D., Hirvonen, J., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Korichi, A., Lawrie, E. A., Masiteng, P. L., . . . Zimba, G. (2019). Spectroscopy of low-spin states in 157Dy : Search for evidence of enhanced octupole correlations. Physical Review C, 100(3), Article 034322. https://doi.org/10.1103/PhysRevC.100.034322

JYU authors or editors

Publication details

All authors or editors: Majola, S. N. T.; Bark, R. A.; Bianco, L.; Bucher, T. D.; Bvumbi, S. P.; Cullen, D. M.; Garrett, P. E.; Greenlees, P. T.; Hartley, D.; Hirvonen, J.; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2019

Volume: 100

Issue number: 3

Article number: 034322

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.100.034322

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65775

Abstract

Low-spin states of 157Dy have been studied using the JUROGAM II array, following the 155Gd (α, 2n) reaction at a beam energy of 25 MeV. The level scheme of 157Dy has been expanded with four new bands. Rotational structures built on the [523]5/2− and [402]3/2+ neutron orbitals constitute new additions to the level scheme as do many of the inter- and intraband transitions. This manuscript also reports the observation of cross I+→(I–1)− and I−→(I–1)+ E1 dipole transitions interlinking structures built on the [523]5/2− (band 5) and [402]3/2+ (band 7) neutron orbitals. These interlacing band structures are interpreted as the bands of parity doublets with simplex quantum number s=–i related to possible octupole correlations.

Keywords: nuclear physics

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

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 2