2000/10/30 by E. Melby, M. Guttormsen, J. Rekstad +3 · 1 citation
Physics and Astronomy · #nucl-ex
paper · pdf · doi:10.1103/physrevc.63.044309
published as Phys.Rev. C63 (2001) 044309 · 21 pages including 2 tables and 11 figures
arxiv created 2000/10/30 · arxiv updated 2009/12/01
The primary gamma-ray spectra of 166-Er and 167-Er are deduced from the (3-He,alpha gamma) and (3-He,3-He' gamma) reaction, respectively, enabling a simultaneous extraction of the level density and the gamma-ray strength function. Entropy, temperature and heat capacity are deduced from the level density within the micro-canonical and the canonical ensemble, displaying signals of a phase-like transition from the pair-correlated ground state to an uncorrelated state at Tc=0.5 MeV. The gamma-ray strength function displays a bump around E-gamma=3 MeV, interpreted as the pygmy resonance.