Physics Letters B (Oct 2022)
First observation of the decay of the 13/2+ isomer in 183Hg and B(M2) systematics of neutron transitions across the nuclear chart
- H. Huang,
- W.Q. Zhang,
- A.N. Andreyev,
- Z. Liu,
- D. Seweryniak,
- Z.H. Li,
- C.Y. Guo,
- A.E. Barzakh,
- P. Van Duppen,
- B. Andel,
- S. Antalic,
- M. Block,
- A. Bronis,
- M.P. Carpenter,
- P. Copp,
- J.G. Cubiss,
- B. Ding,
- D.T. Doherty,
- Z. Favier,
- F. Giacoppo,
- T.H. Huang,
- B. Kindler,
- F.G. Kondev,
- T. Lauritsen,
- J.G. Li,
- G.S. Li,
- B. Lommel,
- H.Y. Lu,
- M. Al Monthery,
- P. Mošať,
- Y.F. Niu,
- C. Raison,
- W. Reviol,
- G. Savard,
- S. Stolze,
- G.L. Wilson,
- H.Y. Wu,
- Z.H. Wang,
- F.R. Xu,
- Q.B. Zeng,
- X.H. Yu,
- F.F. Zeng,
- X.H. Zhou
Affiliations
- H. Huang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- W.Q. Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- A.N. Andreyev
- Department of Physics, University of York, York, YO10 5DD, United Kingdom; Advanced Science Research Center (ASRC), Japan Atomic Energy Agency, Tokai-mura, Japan; Corresponding author at: Department of Physics, University of York, York, YO10 5DD, United Kingdom.
- Z. Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author at: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- D. Seweryniak
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- Z.H. Li
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
- C.Y. Guo
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
- A.E. Barzakh
- Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, 188300 Gatchina, Russia
- P. Van Duppen
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
- B. Andel
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- S. Antalic
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- M. Block
- Helmholtz-Institut Mainz, Mainz, 55128, Germany; GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Darmstadt, 64291, Germany; Johannes-Gutenberg Universität, Mainz, 55099, Germany
- A. Bronis
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- M.P. Carpenter
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- P. Copp
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- J.G. Cubiss
- Department of Physics, University of York, York, YO10 5DD, United Kingdom
- B. Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- D.T. Doherty
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- Z. Favier
- Physics Department, CERN, 1211 Geneva 23, Switzerland
- F. Giacoppo
- Helmholtz-Institut Mainz, Mainz, 55128, Germany; GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Darmstadt, 64291, Germany
- T.H. Huang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- B. Kindler
- GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Darmstadt, 64291, Germany
- F.G. Kondev
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- T. Lauritsen
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- J.G. Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- G.S. Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- B. Lommel
- GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Darmstadt, 64291, Germany
- H.Y. Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- M. Al Monthery
- Department of Physics, University of York, York, YO10 5DD, United Kingdom
- P. Mošať
- Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248 Bratislava, Slovakia
- Y.F. Niu
- Lanzhou University, Lanzhou 730000, China
- C. Raison
- Department of Physics, University of York, York, YO10 5DD, United Kingdom
- W. Reviol
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- G. Savard
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- S. Stolze
- Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- G.L. Wilson
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA
- H.Y. Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
- Z.H. Wang
- Lanzhou University, Lanzhou 730000, China
- F.R. Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
- Q.B. Zeng
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- X.H. Yu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- F.F. Zeng
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- X.H. Zhou
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
- Journal volume & issue
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Vol. 833
p. 137345
Abstract
The decay of the 13/2+ isomeric state in 183Hg was observed for the first time following the α decay of the 13/2+ isomer in 187Pb produced in the 142Nd(50Cr, 2p3n) reaction. Using α−γ delayed coincidence measurements, the half-life of this isomer was measured to be 290(30) μs. This isomer is proposed to deexcite by an unobserved low-energy M2 transition to the known 9/2− member of a strongly prolate-deformed 7/2−[514] band, followed by a 105-keV M1 transition to the bandhead. A lower limit of B(M2) ≥ 0.018 W.u. was deduced for the unobserved transition. The presumed retardation is proposed to be due to the notable shape change between the initial, nearly spherical, and the final, strongly deformed, states. A similar scenario is also considered for the 13/2+ isomer in 181Hg, suggesting both are cases of shape isomers. The B(M2) systematics of neutron transitions across the nuclear chart is discussed.
