Thermal properties and radiative strengths in 160,161,162Dy

Abstract

The level densities and radiative strength functions (RSFs) in 160,161Dy have been extracted using the (3He,alpha gamma) and (3He,3He' gamma) reactions, respectively. The data are compared to previous measurements on 161,162Dy. The energy distribution in the canonical ensemble is discussed with respect to the nucleon Cooper pair breaking process. The gross properties of the RSF are described by the giant electric dipole resonance. The RSF at low gamma-ray energies is discussed with respect to temperature dependency. Resonance parameters of a soft dipole resonance at Egamma = 3 MeV are deduced.

19 pages, including 12 figures

References in corpus (13)

• Extraction of level density and gamma strength function from primary gamma spectra
• Critical temperature for quenching of pair correlations
• Gamma-ray strength function and pygmy resonance in rare earth nuclei
• Observation of Thermodynamical Properties in the ${}^{162}$Dy, ${}^{166}$Er and ${}^{172}$Yb Nuclei
• Thermal and electromagnetic properties of 166-Er and 167-Er
• Level densities and $\gamma$-strength functions in ${}^{148,149}$Sm
• Entropy in hot ^{161,162}Dy and ^{171,172}Yb nuclei
• Energy shifted level densities in the rare earth region
• Entropy of thermal quasiparticles in nuclei
• Free energy and criticality in the nucleon pair breaking process
• Level density and gamma strength function in 162-Dy from inelastic 3-He scattering
• Level density and $\gamma$-ray strength in ${}^{27,28}$Si
• Model for pairing phase transition in atomic nuclei

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