Deformed rotational cascades in 152Dy: Further evidence for shape coexistence at high spin

M. B. Smith, D. E. Appelbe, P. J. Twin, C. W. Beausang, F. A. Beck, M. A. Bentley, D. M. Cullen, D. Curien, P. J. Dagnall, G. de France, G. Duchêne, S. Ertürk, Ch. Finck, B. Haas, I. M. Hibbert, J. C. Lisle, B. M. Nyakó, C. D. O’Leary, C. Rigollet, H. Savajols, J. Simpson, O. Stézowski, J. Styczeń, J. P. Vivien, and K. Zuber
Phys. Rev. C 61, 034314 – Published 17 February 2000
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Abstract

Two new rotational bands have been observed in the 152Dy nucleus following experiments performed using the EUROGAM γ-ray spectrometer. Several transitions have been observed that link these new bands into the known single-particle states. Using the Doppler shift attenuation method, the quadrupole moment of the previously-known rotational sequence has been measured. The value of Qband=3.85±0.06eb confirms the deformed nature of this cascade. The structures of the three bands are discussed in terms of the occupation of both paired and unpaired orbitals, and are found to be in good agreement with theoretical calculations. The observation of two new bands further extends the concept of shape coexistence in the 152Dy nucleus.

  • Received 26 July 1999

DOI:https://doi.org/10.1103/PhysRevC.61.034314

©2000 American Physical Society

Authors & Affiliations

M. B. Smith1,2,*, D. E. Appelbe1,†, P. J. Twin1, C. W. Beausang1,3, F. A. Beck4, M. A. Bentley5, D. M. Cullen1, D. Curien4, P. J. Dagnall6, G. de France4,‡, G. Duchêne4, S. Ertürk1,§, Ch. Finck4,∥, B. Haas4, I. M. Hibbert7,¶, J. C. Lisle6, B. M. Nyakó8, C. D. O’Leary5,¶, C. Rigollet4,**, H. Savajols4,‡, J. Simpson9, O. Stézowski4,††, J. Styczeń10, J. P. Vivien4, and K. Zuber10,4

  • 1Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
  • 2Department of Electronic Engineering and Physics, University of Paisley, Paisley PA1 2BE, United Kingdom
  • 3Wright Nuclear Structure Laboratory, Yale University, 272 Whitney Avenue, New Haven, Connecticut 06520
  • 4Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex 2, France
  • 5School of Sciences, Staffordshire University, College Road, Stoke-on-Trent ST4 2DE, United Kingdom
  • 6Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
  • 7Department of Physics, University of York, Heslington, York YO1 5DD, United Kingdom
  • 8Institute of Nuclear Research of the Hungarian Academy of Sciences, 4001 Debrecen Pf. 51, Hungary
  • 9CLRC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
  • 10H. Niewodniczański Institute of Nuclear Physics, PL-31-342 Kraków, Poland

  • *Present address: Department of Physics and Astronomy, Rutgers University, New Brunswick, NJ 08903.
  • Present address: Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, Canada L8S 4M1.
  • Present address: Grand Accélérateur National d’Ions Lourds, BP 5027, F-14076 Caen Cedex 5, France.
  • §Present address: Nigde Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Nigde, Turkey.
  • Present address: Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germany.
  • Present address: Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom.
  • **Present address: National Accelerator Center, Faure P.O. Box 72, ZA 7131, South Africa.
  • ††Present address: Institut de Physique Nucléaire de Lyon, F-69622 Villeurbanne Cedex, France.

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Vol. 61, Iss. 3 — March 2000

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