Radiative strength functions in 163,164Dy

H. T. Nyhus; S. Siem; M. Guttormsen; A. C. Larsen; A. Bürger; N. U. H. Syed; G. M. Tveten; A. Voinov

doi:10.1103/PhysRevC.81.024325 10.1103/PhysRevC.82.029909

Radiative strength functions in 163,164Dy

Nuclear Experiment 2014-11-21 v2

Authors: H. T. Nyhus , S. Siem , M. Guttormsen , A. C. Larsen , A. Bürger , N. U. H. Syed , G. M. Tveten , A. Voinov

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Abstract

The nuclei 163,164Dy have been investigated using the Oslo method on data from the pick-up reaction 164Dy(3He,alpha gamma)163Dy and the inelastic scattering 164Dy(3He,3He' gamma)164Dy, respectively. The radiative strength functions for both nuclei have been extracted, and a small resonance centered around Eg ?3 MeV is observed in both cases. The parameters of this so-called pygmy M1 resonance (the scissors mode) are compared to previous results on 160,161,162Dy using the Oslo method, and to data on 163Dy measured by the Prague group using the two-step cascade method. In particular, the integrated reduced transition probability B(M1) of the pygmy resonance is compared with neighboring dysprosium isotopes. We also observe an enhanced strength in the region above gamma energy around 5 MeV in 164Dy. Possible origins of this feature are discussed.

Keywords

giant dipole resonance

Cite

@article{arxiv.1006.4716,
  title  = {Radiative strength functions in 163,164Dy},
  author = {H. T. Nyhus and S. Siem and M. Guttormsen and A. C. Larsen and A. Bürger and N. U. H. Syed and G. M. Tveten and A. Voinov},
  journal= {arXiv preprint arXiv:1006.4716},
  year   = {2014}
}

Radiative strength functions in 163,164Dy

Abstract

Keywords

Cite

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