A1 Journal article (refereed)
Decay of a microsecond seniority 3 isomeric state in 155Hf (2024)
Alayed, B., Page, R. D., Joss, D. T., Uusitalo, J., Qi, C., Briscoe, A. D., AlAqeel, M.A. M., Andel, B., Antalic, S., Auranen, K., Ayatollahzadeh, H., Badran, H., Barber, L., Beeton, G., Birova, M., Bogdanoff, V., Cubiss J., G., Cullen, D. M., Deary, J., . . . Zimba, G. (2024). Decay of a microsecond seniority 3 isomeric state in 155Hf. Physical Review C, 110(3), Article 034303. https://doi.org/10.1103/physrevc.110.034303
JYU authors or editors
Publication details
All authors or editors: Alayed, B.; Page, R. D.; Joss, D. T.; Uusitalo, J.; Qi, C.; Briscoe, A. D.; AlAqeel, M. A. M.; Andel, B.; Antalic, S.; Auranen, K.; et al.
Journal or series: Physical Review C
ISSN: 2469-9985
eISSN: 2469-9993
Publication year: 2024
Publication date: 03/09/2024
Volume: 110
Issue number: 3
Article number: 034303
Publisher: American Physical Society
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/physrevc.110.034303
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/96998
Abstract
Excited states in the neutron-deficient nuclide 155 Hf have been investigated in experiments performed at the Accelerator Laboratory of the University of Jyväskylä. The 155 Hf nuclei were produced in fusion-evaporation reactions induced by beams of 295 and 315 MeV 58 Ni ions bombarding an isotopically enriched 102 Pd target and separated using the recoil mass separator MARA. An isomeric state having a half-life of 510(30) ns was discoveredand is interpreted as a seniority 𝜐=3, (𝜋ℎ211/2⊗𝜈𝑓7/2)27/2− configuration. The 𝛾-ray transitions emitted in the deexcitation of the isomeric state to the ground state were identified and a level scheme was constructed, from which the excitation energy of the isomer was determined to be 2581.5(10) keV. A 𝐵(𝐸2) value of 0.45(3) W.u. was deduced for the 105.4 keV transition depopulating the isomeric state. The deduced level scheme and 𝐵(𝐸2) value are compared with systematics and shell-model calculations.
Keywords: nuclear physics
Contributing organizations
Related projects
- Structure of Intruder States in heavy Nuclei
- Pakarinen, Janne
- Research Council of Finland
Ministry reporting: Yes
VIRTA submission year: 2024
Preliminary JUFO rating: 2