Phys. Rev. C
72,
024304
(2005)
[17 pages]
High-spin states in 92-96Zr nuclei
D. Pantelica et al.
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D. Pantelica1,*, I. Gh. Stefan1, N. Nica1, M. -G. Porquet2, G. Duchêne3, A. Astier4,2, S. Courtin3, I. Deloncle2, F. Hoellinger3, A. Bauchet2, N. Buforn4, L. Donadille5, O. Dorvaux3, J. Duprat6,2, B. J. P. Gall3, C. Gautherin7, T. Kutsarova8, S. Lalkovski2,9, R. Lucas7, M. Meyer4, A. Minkova2,9, A. Prévost4,2, N. Redon4, N. Schulz3, H. Sergolle6, O. Stézowski4, Ts. Venkova8, and A. Wilson2
1Institute for Physics and Nuclear Engineering, Bucharest-Magurele, P.O. Box MG6, Romania 2Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3/CNRS et Université Paris-Sud, F-91405 Orsay, France 3Institut de Recherches Subatomiques, IN2P3/CNRS et Université Louis Pasteur, BP 28, F-67037 Strasbourg CEDEX 2, France 4Institut de Physique Nucléaire de Lyon, IN2P3/CNRS et Université Claude Bernard, F-69622 Villeurbanne, France 5School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom 6Institut de Physique Nucléaire, IN2P3/CNRS et Université Paris-Sud, F-91406 Orsay, France 7Service de Physique Nucléaire, DAPNIA, CEA Saclay, F-91191 Gif-sur-Yvette, France 8Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria 9University of Sofia, Faculty of Physics, BG-1126 Sofia, Bulgaria
Received 10 June 2004; revised 8 April 2005; published 11 August 2005
The 92-96Zr nuclei were produced as fission fragments following the fusion reactions 28Si+176Yb and 31P+176Yb at 145 and 152 MeV bombarding energy, respectively. Prompt γ rays emitted in the two reactions were detected with the EUROGAM II and EUROBALL IV arrays. Sequences of γ-ray transitions observed in coincidence were newly assigned to 93-96Zr. The previously known level schemes have been extended to higher excitation energies and higher spins. The experimental results are discussed in the framework of shell-model calculations with 88Sr assumed to be an inert core and the valence protons and neutrons filling the π(2p1/2,1g9/2) and ν(2d5/2,3s1/2) orbitals.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.72.024304
DOI:
10.1103/PhysRevC.72.024304
*Corresponding author: pantel@ifin.nipne.ro (D. Pantelica)
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