Direct observation of E0 transitions in 188Pb through in-beam spectroscopy
Competing configurations, assigned with three different shapes, are mixed at low angular momentum in the neutron-deficient 188 Pb 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 2 + state is the head of the predominantly prolate band. The compositions of the 4 2 + → 4 1 + and 2 2 + → 2 1 + inter-band transitions have been determined, indicating configuration mixing between the bands.
Authors
- J. Sorri (ORCID: https://orcid.org/0000-0003-3693-2638)
- J. Uusitalo (ORCID: https://orcid.org/0000-0003-3780-7222)
- K. Hadyńska-Klęk (ORCID: https://orcid.org/0000-0003-1244-9561)
- P. Papadakis (ORCID: https://orcid.org/0000-0001-7509-4257)
- A. D. Briscoe (ORCID: https://orcid.org/0000-0002-3925-5065)
- U. Jakobsson (ORCID: https://orcid.org/0000-0001-9741-141X)
- K. Wrzosek-Lipska (ORCID: https://orcid.org/0000-0003-0046-1387)
- D. O’Donnell (ORCID: https://orcid.org/0000-0002-4710-3803)
- D. M. Cox (ORCID: https://orcid.org/0000-0002-2790-8348)
- A. Mistry (ORCID: https://orcid.org/0000-0002-0951-0475)
- A. Herzáň (ORCID: https://orcid.org/0000-0002-6736-7638)
- K. Auranen (ORCID: https://orcid.org/0000-0002-6604-7659)
- P. T. Greenlees (ORCID: https://orcid.org/0000-0002-5986-5274)
- J. Sarén (ORCID: https://orcid.org/0000-0001-6383-4633)
- P. Rahkila (ORCID: https://orcid.org/0000-0003-4392-0782)
- P. Ruotsalainen (ORCID: https://orcid.org/0000-0002-8335-452X)
- C. Scholey (ORCID: https://orcid.org/0000-0002-8743-6071)
- M. Leino (ORCID: https://orcid.org/0000-0003-2490-4955)
- R. Julin (ORCID: https://orcid.org/0000-0002-1214-8366)
- T. Grahn (ORCID: https://orcid.org/0000-0002-6255-2279)
- J. Pakarinen (ORCID: https://orcid.org/0000-0001-8944-8757)
- R.-D. Herzberg (ORCID: https://orcid.org/0000-0001-9876-1518)
- P. Peura (ORCID: https://orcid.org/0000-0002-8541-0169)
- S. Stoltze
- S. Juutinen
- M. Sandzelius
- J. Konki (ORCID: https://orcid.org/0000-0001-6200-323X)
Institutions
- University of Liverpool (GB)
- Slovak Academy of Sciences (SK)
- Daresbury Laboratory (GB)
- Institute of Physics of the Slovak Academy of Sciences (SK)
- University of Warsaw (PL)
- University of Jyväskylä (FI)
Publication Details
- Journal
- Physics Letters B
- Published
- 2024-09-27
- DOI
- https://doi.org/10.1016/j.physletb.2024.139048
- Citations
- 5
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 3.30
Funders
- Agentúra na Podporu Výskumu a Vývoja
- Vedecká Grantová Agentúra MŠVVaŠ SR a SAV
- Science and Technology Facilities Council
- Seventh Framework Programme
- Luonnontieteiden ja Tekniikan Tutkimuksen Toimikunta