Radiative strength functions in 163,164Dy

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.

References in corpus (3)

• Thermal properties and radiative strengths in 160,161,162Dy
• Statistical structure and $\gamma$-decay properties of closed shell Pb nuclei
• Enhanced radiative strength in the quasi-continuum of 117Sn

Cited by in corpus (10)

• Analysis of possible systematic errors in the Oslo method
• Verification of detailed balance for $\gamma$ absorption and emission in Dy isotopes
• Transitional $\gamma$ strength in Cd isotopes
• First observation of low-energy γ-ray enhancement in the rare-earth region
• Independent Normalization for $\gamma$-ray Strength Functions: The Shape Method
• Consolidating the concept of low-energy magnetic dipole decay radiation
• Nuclear Level Density and Gamma-Ray Strength Function of 43Sc
• Statistical properties of the well deformed ${}^{153,155}$Sm nuclei and the scissors resonance
• A new software implementation of the Oslo method with rigorous statistical uncertainty propagation
• Experimentally constrained ${}^{165,166}\text{Ho}(n,\gamma )$ rates and implications for the $s$ process