Single-particle and collective excitations in the transitional nucleus 166Os
Stolze, S., Grahn, T., Julin, R., Joss, D. T., Andgren, K., Auranen, K., Bönig, S., Cox, D., Darby, I. G., Doncel, M., Eeckhaudt, S., Greenlees, P. T., Hadinia, B., Herzáň, A., Jakobsson, U., Jones, P., Juutinen, S., Ketelhut, S., Konki, J., . . . Uusitalo, J. (2021). Single-particle and collective excitations in the transitional nucleus 166Os. Journal of Physics G: Nuclear and Particle Physics, 48(12), Article 125101. https://doi.org/10.1088/1361-6471/ac2889
Julkaistu sarjassa
Journal of Physics G: Nuclear and Particle PhysicsPäivämäärä
2021Oppiaine
FysiikkaYdin- ja kiihdytinfysiikan huippuyksikköKiihdytinlaboratorioPhysicsCentre of Excellence in Nuclear and Accelerator Based PhysicsAccelerator LaboratoryTekijänoikeudet
© 2021 IOP Publishing
The mean lifetimes of the lowest energy 2+, 8+ and 9− states in 166Os have been measured using the recoil distance Doppler-shift method in conjunction with a selective recoil-decay tagging technique. These measurements extend studies into the most neutron-deficient mass region accessible to current experimental methods. The B(E2; 2+ → 0+) = 7(2) W.u. extracted from these measurements is markedly lower than those observed in the heavier even-mass Os isotopes. The 8+ and 9− states yield reduced transition probabilities that are consistent with single-particle transitions. While these values may indicate a departure from collective structure, the level scheme and the underlying nuclear configurations can also be interpreted in terms of a simple collective picture. This contrasting behaviour suggests an intriguing dichotomy in the description of heavy transitional nuclei.
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IOP PublishingISSN Hae Julkaisufoorumista
0954-3899Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/101550721
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This work has been supported through EURONS (European Commission contract no. RII3-CT-2004-506065), the Academy of Finland under the Finnish Centre of Excellence Programme 2006–2011 (Nuclear and Accelerator Based Physics contract 213503). The UK/France (STFC/IN2P3) Loan Pool and GAMMAPOOL network are acknowledged for the EUROGAM detectors of JUROGAM I and II. AH would like to thank the Slovak Research and Development Agency under contract No. APVV-20-0532, and Slovak grant agency VEGA (contract No. 2/0067/21).![showless](/themes/JYX2//images/showless.png)
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