Physics Letters B (Aug 2020)
Evidence for pseudospin-chiral quartet bands in the presence of octupole correlations
- S. Guo,
- C.M. Petrache,
- D. Mengoni,
- Y.H. Qiang,
- Y.P. Wang,
- Y.Y. Wang,
- J. Meng,
- Y.K. Wang,
- S.Q. Zhang,
- P.W. Zhao,
- A. Astier,
- J.G. Wang,
- H.L. Fan,
- E. Dupont,
- B.F. Lv,
- D. Bazzacco,
- A. Boso,
- A. Goasduff,
- F. Recchia,
- D. Testov,
- F. Galtarossa,
- G. Jaworski,
- D.R. Napoli,
- S. Riccetto,
- M. Siciliano,
- J.J. Valiente-Dobon,
- M.L. Liu,
- G.S. Li,
- X.H. Zhou,
- Y.H. Zhang,
- C. Andreoiu,
- F.H. Garcia,
- K. Ortner,
- K. Whitmore,
- A. Ataç-Nyberg,
- T. Bäck,
- B. Cederwall,
- E.A. Lawrie,
- I. Kuti,
- D. Sohler,
- T. Marchlewski,
- J. Srebrny,
- A. Tucholski
Affiliations
- S. Guo
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China; Corresponding authors.
- C.M. Petrache
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Bât. 104-108, 91405 Orsay, France; Corresponding authors.
- D. Mengoni
- Dipartimento di Fisica e Astronomia, Université degli Studi di Padova, I-35131 Padova, Italy; INFN, Sezione di Padova, I-35131 Padova, Italy
- Y.H. Qiang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Y.P. Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
- Y.Y. Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
- J. Meng
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China; Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
- Y.K. Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
- S.Q. Zhang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
- P.W. Zhao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
- A. Astier
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Bât. 104-108, 91405 Orsay, France
- J.G. Wang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- H.L. Fan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- E. Dupont
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Bât. 104-108, 91405 Orsay, France
- B.F. Lv
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Bât. 104-108, 91405 Orsay, France
- D. Bazzacco
- Dipartimento di Fisica e Astronomia, Université degli Studi di Padova, I-35131 Padova, Italy; INFN, Sezione di Padova, I-35131 Padova, Italy
- A. Boso
- Dipartimento di Fisica e Astronomia, Université degli Studi di Padova, I-35131 Padova, Italy; INFN, Sezione di Padova, I-35131 Padova, Italy
- A. Goasduff
- Dipartimento di Fisica e Astronomia, Université degli Studi di Padova, I-35131 Padova, Italy; INFN, Sezione di Padova, I-35131 Padova, Italy
- F. Recchia
- Dipartimento di Fisica e Astronomia, Université degli Studi di Padova, I-35131 Padova, Italy; INFN, Sezione di Padova, I-35131 Padova, Italy
- D. Testov
- Dipartimento di Fisica e Astronomia, Université degli Studi di Padova, I-35131 Padova, Italy; INFN, Sezione di Padova, I-35131 Padova, Italy
- F. Galtarossa
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy; Dipartimento di Fisica e Scienze della Terra, Université di Ferrara, Ferrara, Italy
- G. Jaworski
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
- D.R. Napoli
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
- S. Riccetto
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
- M. Siciliano
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
- J.J. Valiente-Dobon
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Padova), Italy
- M.L. Liu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- G.S. Li
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- X.H. Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- Y.H. Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- C. Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- F.H. Garcia
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- K. Ortner
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- K. Whitmore
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- A. Ataç-Nyberg
- KTH Department of Physics, S-10691 Stockholm, Sweden
- T. Bäck
- KTH Department of Physics, S-10691 Stockholm, Sweden
- B. Cederwall
- KTH Department of Physics, S-10691 Stockholm, Sweden
- E.A. Lawrie
- iThemba LABS, National Research Foundation, PO Box 722, 7131 Somerset West, South Africa; Department of Physics & Astronomy, University of the Western Cape, P/B X17, Bellville ZA-7535, South Africa
- I. Kuti
- Institute of Nuclear Research, Hungarian Academy of Sciences, 4001 Debrecen, Hungary
- D. Sohler
- Institute of Nuclear Research, Hungarian Academy of Sciences, 4001 Debrecen, Hungary
- T. Marchlewski
- University of Warsaw, Heavy Ion Laboratory, Pasteura 5a, 02-093 Warsaw, Poland
- J. Srebrny
- University of Warsaw, Heavy Ion Laboratory, Pasteura 5a, 02-093 Warsaw, Poland
- A. Tucholski
- University of Warsaw, Heavy Ion Laboratory, Pasteura 5a, 02-093 Warsaw, Poland
- Journal volume & issue
-
Vol. 807
p. 135572
Abstract
Three nearly degenerate pairs of doublet bands are identified in 131Ba. Two of them, with positive-parity, are interpreted as pseudospin-chiral quartet bands. This is the first time that a complete set of chiral doublet bands built on the pseudospin partners π(d5/2,g7/2) is observed. The chiral bands with opposite parity built on 3-quasiparticle configurations are directly connected by many E1 transitions, without involving an intermediary non-chiral configuration. The observed band structures in 131Ba have been investigated by using the reflection-asymmetric particle rotor model. The energies and the electromagnetic transition ratios of the three pairs of doublet bands observed in 131Ba are reproduced and they are interpreted as chiral doublet bands with three-quasiparticle configurations. It is the first time that multiple chiral bands are observed in the presence of enhanced octupole correlations and pseudospin symmetry.
