A1 Journal article (refereed)
Identification of sub-μs isomeric states in the odd-odd nucleus 178Au (2021)

Gillespie, S. A., Stott, A., Andreyev, A. N., Cubiss, J. G., Al Monthery, M., Barton, C. J., Antalic, S., Auranen, K., Badran, H., Cox, D., Grahn, T., Greenlees, P. T., Herzan, A., Higgins, E., Julin, R., Juutinen, S., Klimo, J., Konki, J., Leino, M., . . . Wearing, F. (2021). Identification of sub-μs isomeric states in the odd-odd nucleus 178Au. Physical Review C, 103(4), Article 044307. https://doi.org/10.1103/PhysRevC.103.044307

JYU authors or editors

Publication details

All authors or editors: Gillespie, S. A.; Stott, A.; Andreyev, A. N.; Cubiss, J. G.; Al Monthery, M.; Barton, C. J.; Antalic, S.; Auranen, K.; Badran, H.; Cox, D.; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2021

Volume: 103

Issue number: 4

Article number: 044307

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.103.044307

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/75017


The neutron-deficient gold (Z=79) isotopes in the vicinity of the neutron midshell N=104 provide prolific examples of shape coexistence and isomerism at low excitation energy. They can be probed via a number of different experimental techniques. In this study, two new isomeric states with half-lives of 294(7) and 373(9) ns have been observed in the neutron-deficient odd-odd nuclide 178Au (N=99) in an experiment at the RITU gas-filled separator at JYFL, Jyväskylä. This result was achieved due to the use of a segmented planar germanium detector with a high efficiency at low energies. By applying the recoil-decay tagging technique, they were assigned to decay to two different long-lived α-decaying states in 178Au.

Keywords: nuclear physics; isotopes; gold

Contributing organizations

Ministry reporting: Yes

Preliminary JUFO rating: 2

Last updated on 2021-08-06 at 15:06