A1 Journal article (refereed)
Direct observation of E0 transitions in 188Pb through in-beam spectroscopy (2024)


Papadakis, P., Pakarinen, J., Briscoe, A.D., Cox, D.M., Julin, R., Auranen, K., Grahn, T., Greenlees, P.T., Hadyn̂ska-Klek, K., Herzáň, A., Herzberg, R.-D., Jakobsson, U., Juutinen, S., Konki, J., Leino, M., Mistry, A., O'Donnell, D., Peura, P., Rahkila, P., . . . Wrzosek-Lipska, K. (2024). Direct observation of E0 transitions in 188Pb through in-beam spectroscopy. Physics Letters B, 858, Article 139048. https://doi.org/10.1016/j.physletb.2024.139048


JYU authors or editors


Publication details

All authors or editors: Papadakis, P.; Pakarinen, J.; Briscoe, A.D.; Cox, D.M.; Julin, R.; Auranen, K.; Grahn, T.; Greenlees, P.T.; Hadyn̂ska-Klek, K.; Herzáň, A.; et al.

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2024

Publication date: 27/09/2024

Volume: 858

Article number: 139048

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.physletb.2024.139048

Research data link: https://doi.org/10.23729/a1927d10-ca20-4aac-81c8-b5a9ae0eff4d

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/98016


Abstract

Competing configurations, assigned with three different shapes, are mixed at low angular momentum in the neutron-deficient 188Pb nucleus. Here, we present a simultaneous conversion electron and γ-ray in-beam spectroscopic precision measurement employing the sage spectrometer. The level energy of the first excited state, 0+2, has been determined at 591(1) keV through direct measurement of conversion electrons. By using the intensity of the observed 0+2→0+1 transition to the ground state, the feeding of the 0+2 state has been determined for the first time, which suggests the 0+2state is the head of the predominantly prolate band. The compositions of the 4+2→4+1and 2+2→2+1 inter-band transitions have been determined, indicating configuration mixing between the bands.


Keywords: nuclear physics; particle physics

Free keywords: in-beam spectroscopy; shape coexistence; internal conversion electrons


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Ministry reporting: Yes

VIRTA submission year: 2024

Preliminary JUFO rating: 3


Last updated on 2024-02-11 at 20:06