Multiple chiral bands in $$^{137}$$ 137 Nd
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Regular Article - Experimental Physics
Multiple chiral bands in 137 Nd C. M. Petrache1,a , B. F. Lv2,b , Q. B. Chen3 , J. Meng4,5 , A. Astier1, E. Dupont1, K. K. Zheng1, P. T. Greenlees6 , H. Badran6 , T. Calverley6,7 , D. M. Cox6,8 , T. Grahn6 , J. Hilton6,7 , R. Julin6 , S. Juutinen6 , J. Konki6,9 , J. Pakarinen6 , P. Papadakis6,10 , J. Partanen6 , P. Rahkila6 , P. Ruotsalainen6 , M. Sandzelius6 , J. Saren6 , C. Scholey6 , J. Sorri6,11 , S. Stolze6,12 , J. Uusitalo6 , B. Cederwall13 , A. Ertoprak13 , H. Liu13 , S. Guo2 , J. G. Wang2 , X. H. Zhou2 , I. Kuti14 , J. Timár14 , A. Tucholski15 , J. Srebrny15 , C. Andreoiu16 1
Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Bât. 104-108, 91405 Orsay, France Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 3 Physik-Department, Technische Universität München, 85747 Garching, Germany 4 State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China 5 Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan 6 Department of Physics, University of Jyväskylä, 40014 Jyvaskyla, Finland 7 The Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK 8 Department of Mathematical Physics, Lund Institute of Technology, 22362 Lund, Sweden 9 CERN, 1211 Geneva 23, Switzerland 10 STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, UK 11 Sodankylä Geophysical Observatory, University of Oulu, 99600 Sodankylä, Finland 12 Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA 13 KTH Department of Physics, 10691 Stockholm, Sweden 14 Institute for Nuclear Research, Hungarian Academy of Sciences, Pf. 51, 4001 Debrecen, Hungary 15 Heavy Ion Laboratory, University of Warsaw, Pasteura 5a, 02-093 Warsaw, Poland 16 Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada 2
Received: 8 June 2020 / Accepted: 4 August 2020 © Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Communicated by Navin Alahari
Abstract Two new bands have been identified in 137 Nd from a high-statistics JUROGAM II gamma-ray spectroscopy experiment. Constrained density functional theory and particle rotor model calculations are used to assign configurations and investigate the band properties, which are well described and understood. It is demonstrated that these two new bands can be interpreted as chiral partners of previously known three-quasiparticle positive- and negative-parity bands. The newly observed chiral doublet bands in 137 Nd represent an important support to the existence of multiple chiral bands in nuclei. The present results constitute the missing stone in the series of Nd nuclei showing multiple chiral bands, which becomes the most extended sequence of odd–even and eveneven nuclei presenting multiple chiral bands in the Segré chart.
a e-mail:
[email protected] (corresponding author)
b e-mail:
[email protected] (corr
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