The gamma-decay of the GDR in hot Hg and Eu isotopes has been measured in c
oincidence with selected low-energy gamma-transitions of the evaporation re
sidues.
In the Hg ease, the GDR width at finite temperature and at different spins
was studied by analyzing simultaneously with the statistical model the high
-energy gamma-ray spectra associated with different residual nuclei and the
fractions of residue cross-sections. The measured GDR width was found in g
ood agreement with the predictions of the thermal fluctuations model.
In the case of Eu, we have measured the high-energy gamma-rays in coinciden
ce with low-energy gamma-transitions from different nuclear configurations
of Eu-143;, order to search for the GDR decay built on a superdeformed stat
e. The analysis of the data shows a possible evidence of this state. The me
asured intensity indicates that the superdeformation survives only few MeV
above the yrast line.