https://doi.org/10.1140/epja/s10050-025-01582-w
Regular Article - Experimental Physics
Lifetimes and electromagnetic transition strengths in 
Ba
1
Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164, Sofia, Bulgaria
2
Institut für Kernphysik, Universität zu Köln, 50937, Köln, Germany
3
Argonne National Laboratory, 9700 S Cass Av, 60439, Lemont, IL, USA
Received:
29
December
2024
Accepted:
29
April
2025
Published online:
19
May
2025
The lifetimes of the yrast band states from 
to 
and 
in Ba were determined from a Recoil Distance Doppler-Shift method measurement conducted at the Institute of Nuclear Physics at the University of Cologne. The evolution of the deduced E2 transition strengths in the yrast band indicates that Ba does not conform to expectations for a nucleus near the X(5) critical point symmetry. Instead, this evolution aligns more closely with the IBM-1 description of a transitional nucleus with no particular symmetry.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
