A4 Article in conference proceedings
Disentangling decaying isomers and searching for signatures of collective excitations in β decay (2020)

Guadilla, V., Fallot, M., Algora, A., Tain, J. L., Agramunt, J., Äystö, J., Briz, J. A., Cucoanes, A., Eronen, T., Estienne, M., Fraile, L. M., Ganioǧlu, E., Gelletly, W., Gorelov, D., Hakala, J., Jokinen, A., Jordan, D., Kankainen, A., Kolhinen, V., . . . Zakari-Issoufou, A.A. (2020). Disentangling decaying isomers and searching for signatures of collective excitations in β decay. In INPC2019 : 27th International Nuclear Physics Conference (Article 012134). IOP Publishing Ltd. Journal of Physics : Conference Series, 1643. https://doi.org/10.1088/1742-6596/1643/1/012134

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Publication details

All authors or editors: Guadilla, V.; Fallot, M.; Algora, A.; Tain, J. L.; Agramunt, J.; Äystö, J.; Briz, J. A.; Cucoanes, A.; Eronen, T.; Estienne, M.; et al.

Parent publication: INPC2019 : 27th International Nuclear Physics Conference

Place and date of conference: Glasgow, United Kingdom, 29.7.-2.8.2019

Journal or series: Journal of Physics : Conference Series

ISSN: 1742-6588

eISSN: 1742-6596

Publication year: 2020

Number in series: 1643

Article number: 012134

Publisher: IOP Publishing Ltd

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1088/1742-6596/1643/1/012134

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/73738

Abstract

In this contribution we summarize the recent study of the β decay of neutron-rich nuclei with isomeric states close in energy to the ground states. The disentanglement of each pair of β-decaying states was achieved by applying different strategies and using the purification capabilities of the JYFLTRAP double Penning trap system at the Ion Guide Isotope Separator On-Line facility in Jyvaskyla. The Total Absorption γ-ray Spectroscopy technique was employed to determine the β intensity probabilities populating the excited states in the daughter nuclei. Previously undetected β intensity was found and we have already evaluated the impact of part of these results on reactor summation calculations. The possibility to populate states associated with the Pygmy Dipole Resonance in the β decay of 96gsY has also been investigated thanks to the sensitivity of our technique to high-lying strength in the daughter nuclei.

Keywords: nuclear physics; spectroscopy

Free keywords: Gamma ray spectrometers; Gamma rays; Ground state; Beta decay; Collective excitations; Gamma-ray spectroscopy; Isomeric state; Isotope-separator-on-line; Neutron-rich nuclei; Penning trap; Pygmy dipole resonances

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Ministry reporting: Yes

Reporting Year: 2020

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