Elsevier

Nuclear Physics A

Volume 574, Issue 3, 11 July 1994, Pages 501-520
Nuclear Physics A

The angular-momentum dependence of the giant dipole resonance in 154Dy

https://doi.org/10.1016/0375-9474(94)90242-9Get rights and content

Abstract

The statistical γ-ray decay of the compound nucleus 154Dy formed at an excitation energy of 69 MeV is studied in three angular-momentum windows 〈J 〉 = 31,42 and 50ℏ. The GDR strength function extracted from the data indicates a constant centroid energy for the resonance EGDR = 15.2 ± 0.5 MeV, a small deformation of the nuclear shape for all spin regions and an increase in the resonance width with increasing angular momentum. The latter might indicate larger shape fluctuations at higher angular momenta. A systematical study of the dependence of the extracted strength function with different methods of analysis is presented, and their discrepancies discussed.

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  • Cited by (0)

    1

    Present address: Kernfysisch Versneller Instituut, 9747 AA Groningen, The Netherlands.

    2

    Permanent address: Soltan Institute for Nuclear Studies, Pl 05-400 Swierk, Poland.

    3

    Permanent address: Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.

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