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Backbending region study in Dy-160,Dy-162 using incomplete fusion reactions

MPG-Autoren
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Binder,  B.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Dietrich,  A.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Härtlein,  T.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Bauer,  H.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Gund,  C.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Pansegrau,  D.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Schwalm,  D.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Zitation

Jungclaus, A., Binder, B., Dietrich, A., Härtlein, T., Bauer, H., Gund, C., et al. (2002). Backbending region study in Dy-160,Dy-162 using incomplete fusion reactions. Physical Review C, 66(1): 014312, pp. 014312-014312.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0011-82FE-5
Zusammenfassung
The incomplete fusion reactions Li-7-->Gd-158,Gd-160 at beam energies of 8 MeV/nucleon have been used to study the first band crossing region in the heavy stable Dy isotopes Dy-160,Dy- 162. The gamma rays were detected in the GASP spectrometer in coincidence with fast charged particles detected in the ISIS silicon ball. We succeeded to observe the first backbending in Dy-162 at a crossing frequency of (h) over bar omegaapproximate to350 keV, a value much higher than expected from other nuclei in this mass region. Moreover, for the first time in a nucleus with a very large interaction strength, the yrare band in Dy- 160 could be established up to rather high spin (I=20 (h) over bar) allowing for a precise determination of the interaction strength between the ground state and the Stockholm band, \Vg- S\ =219(2) keV. Together with \Vg-S\=14(2) keV determined for the corresponding interaction in Dy-162, a full oscillation of the strengths from one node to the next could be observed within an isotopic chain. In addition to the ground state and Stockholm bands, many other known bands in the two nuclei were considerably extended to higher spin and the experimental results are compared to calculations within the projected shell model.