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Studies of quadrupole collectivity in the γ -soft 106Ru

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Abstract.

Various alternative models were used to describe the structure of 106Ru . For example, the General Collective Model (GCM) predicts shape-coexistence for 106Ru with a spherical and a triaxial minimum and strongly mixed structures, while in the IBA-2 calculations, where 106Ru was considered as transitional from vibrational U(5) to γ -soft O(6) , no need was found to include the shape-coexisting configurations. In order to provide additional constraints on the model interpretations, we have applied the Advanced Time-Delayed (ATD) βγγ(t) method to measure the level lifetimes of the excited levels in 106Ru . The new results include the half-lives of T 1/2 = 183(3) ps and 7.5(30)ps for the 2+ 1 and 2+ 2 states, respectively.

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Authors and Affiliations

  1. Department of Nuclear and Particle Physics, Uppsala University, P.O. Box 535, SE-751 21, Uppsala, Sweden

    M. Sanchez-Vega, H. Mach, R. B. E. Taylor, B. Fogelberg & A. Lindroth

  2. Institute for Structure and Nuclear Astrophysics, University of Notre Dame, 46616, Notre Dame, IN, USA

    H. Mach

  3. Department of Chemistry, University of Oslo, P.O. Box 1033, N-03150, Blindern, Norway

    A. J. Aas

  4. Department of Physics, University of Jyväskylä, P.O. Box 35, FIN-40351, Jyväskylä, Finland

    P. Dendooven, A. Honkanen, M. Huhta, G. Lhersonneau, M. Oinonen, J. M. Parmonen, H. Penttilä & J. Äystö

  5. School of Physics and Space Research, University of Birmingham, B15 2TT, Birmingham, UK

    J. R. Persson

  6. Faculty of Physics, University of Warsaw, ul. Hoża 69, PL 00-681, Warsaw, Poland

    J. Kurpeta

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  1. M. Sanchez-Vega
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  2. H. Mach
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  3. R. B. E. Taylor
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  9. M. Huhta
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  12. J. M. Parmonen
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  14. J. Äystö
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Correspondence to M. Sanchez-Vega.

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J. Bijnens

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Sanchez-Vega, M., Mach, H., Taylor, R.B.E. et al. Studies of quadrupole collectivity in the γ -soft 106Ru . Eur. Phys. J. A 35, 159–165 (2008). https://doi.org/10.1140/epja/i2007-10530-3

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  • DOI: https://doi.org/10.1140/epja/i2007-10530-3

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