Physics Letters B (Nov 2024)
Direct observation of E0 transitions in 188Pb through in-beam spectroscopy
- P. Papadakis,
- J. Pakarinen,
- A.D. Briscoe,
- D.M. Cox,
- R. Julin,
- K. Auranen,
- T. Grahn,
- P.T. Greenlees,
- K. Hadyńska-Klek,
- A. Herzáň,
- R.-D. Herzberg,
- U. Jakobsson,
- S. Juutinen,
- J. Konki,
- M. Leino,
- A. Mistry,
- D. O'Donnell,
- P. Peura,
- P. Rahkila,
- P. Ruotsalainen,
- M. Sandzelius,
- J. Sarén,
- C. Scholey,
- S. Stoltze,
- J. Sorri,
- J. Uusitalo,
- K. Wrzosek-Lipska
Affiliations
- P. Papadakis
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, UK; Corresponding author at: STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, UK.
- J. Pakarinen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Corresponding author.
- A.D. Briscoe
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- D.M. Cox
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- R. Julin
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- K. Auranen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- T. Grahn
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- P.T. Greenlees
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- K. Hadyńska-Klek
- Heavy Ion Laboratory, University of Warsaw, Warsaw, PL-02-093, Poland
- A. Herzáň
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Institute of Physics, Slovak Academy of Sciences, 84511, Bratislava, Slovakia
- R.-D. Herzberg
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool, L69 7ZE, UK
- U. Jakobsson
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- S. Juutinen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Konki
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- M. Leino
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- A. Mistry
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool, L69 7ZE, UK
- D. O'Donnell
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool, L69 7ZE, UK
- P. Peura
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- P. Rahkila
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- P. Ruotsalainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- M. Sandzelius
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Sarén
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- C. Scholey
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- S. Stoltze
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Sorri
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Uusitalo
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- K. Wrzosek-Lipska
- KU Leuven, Instituut voor Kern- en Stralingsfysica, B-3001, Leuven, Belgium
- Journal volume & issue
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Vol. 858
p. 139048
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, 02+, has been determined at 591(1)keV through direct measurement of conversion electrons. By using the intensity of the observed 02+→01+ transition to the ground state, the feeding of the 02+ state has been determined for the first time, which suggests the 02+ state is the head of the predominantly prolate band. The compositions of the 42+→41+ and 22+→21+ inter-band transitions have been determined, indicating configuration mixing between the bands.
