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Co-existing coupling schemes at high spin in 166Hf

Authors
  • Jensen, D. Ringkjøbing1
  • Domscheit, J.2
  • Hagemann, G. B.1
  • Bergström, M.1
  • Herskind, B.1
  • Nielsen, B. S.1
  • Sletten, G.1
  • Varmette, P. G.1
  • Törmänen, S.1
  • Hübel, H.2
  • Ma, W.3
  • Bracco, A.4
  • Camera, F.4
  • Demaria, F.4
  • Frattini, S.4
  • Million, B.4
  • Napoli, D.5
  • Maj, A.6
  • Nyakó, B. M.7
  • Joss, D. T.8, 9
  • And 1 more
  • 1 The Niels Bohr Institute, Blegdamsvej 17, Copenhagen Ø, DK-2100, Denmark , Copenhagen Ø
  • 2 University of Bonn, Institut für Strahlen- und Kernphysik, Bonn, Germany , Bonn
  • 3 Mississippi State University, Mississippi State, MS, 39762, USA , Mississippi State
  • 4 Università di Milano and INFN Milano, Dipartemento di Fisica, Milano, Italy , Milano
  • 5 Laboratori Nationali Legnaro and INFN Padova, Padova, Italy , Padova
  • 6 Niewodniczanski Institute of Nuclear Physics, Krakow, Poland , Krakow
  • 7 Institute of Nuclear Research (ATOMKI), Debrecen, H-4001, Hungary , Debrecen
  • 8 University of Liverpool, Oliver Lodge Laboratory, Liverpool, UK , Liverpool
  • 9 Staffordshire University, School of Sciences, College Road, Stoke-on-Trent, ST4 2DE, UK , Stoke-on-Trent
  • 10 University of Bordeaux I., CENBG, Bordeaux-Gradignan, France , Bordeaux-Gradignan
Type
Published Article
Journal
The European Physical Journal A
Publisher
Società Italiana di Fisica
Publication Date
Jul 01, 2000
Volume
8
Issue
2
Pages
165–176
Identifiers
DOI: 10.1007/s100530050022
Source
Springer Nature
Keywords
License
Yellow

Abstract

The nucleus 166Hf has been populated by the reaction 96Zr(74Ge,4n) using a beam energy of 310MeV. γ-rays were detected with the EUROBALL III detector array. Fourteen new normal-deformed rotational bands, of which six form coupled pairs, have been observed in 166Hf. Four previously known bands have been extended to considerably higher spin, and configurations of the new bands are proposed. Two different bands have been assigned configurations involving the same orbitals at high spin. The two coupling schemes, deformation and rotation alignment, are discussed in connection with this new observation, which calls for a formulation of co-existing coupling schemes in six-quasiparticle structures involving the same orbitals at high spin.

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