Observation of strongly deformed shapes in 154-152 Dy nuclei at medium temperatures

R.F. Noorman, J.C. Bacelar, M.N. Harakeh, W.H.A. Hesselink, H.J. Hofmann, N. Kalantar-Nayestanaki, J.P.S. van Schagen, Arjen Stolk, Z. Sujkowski, Martien J.A. de Voigt, R.M.A. van der Woude

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    Abstract

    The γ-decay of the giant dipole resonance (GDR) built on excited states of 154-152 Dy nuclei is studied. The selection of GDR decay from high spin states leading to specific exit channels was made possible by triggering on high spin isomers. The deduced energy splitting of the GDR implies large deformations (|β|{all equal to}0.4-0.5). The resonance widths of the components are comparable to those of the GDR built on the ground state indicating small shape fluctuations.

    Original languageEnglish
    Pages (from-to)257-261
    Number of pages5
    JournalPhysics Letters B
    Volume292
    Issue number3-4
    DOIs
    Publication statusPublished - 15 Oct 1992

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