Giant dipole resonance built on hot rotating nuclei produced during evaporation of light particlesfrom the $^{88}$Mo compound nucleus

High-energy giant dipole resonance (GDR) γ rays were measured following the decay of the hot, rotatingcompound nucleus of 88Mo, produced at excitation energies of 124 and 261 MeV. The reaction 48Ti+ 40Ca at 300and 600 MeV bombarding energies has been used. The data were analyzed using the statistical modelMonte Carlocode GEMINI++. It allowed extracting the giant dipole resonance parameters by fitting the high-energy γ -rayspectra. The extracted GDR widths were compared with the available data at lower excitation energy and withtheoretical predictions based on (i) The Lublin-Strasbourg drop macroscopic model, supplemented with thermalshape fluctuations analysis, and (ii) The phonon damping model. The theoretical predictions were convolutedwiththe population matrices of evaporated nuclei from the statistical model GEMINI++. Also a comparison with theresults of a phenomenological expression based on the existing systematics, mainly for lower temperature data,is presented and discussed. A possible onset of a saturation of the GDR width was observed around T = 3 MeV.