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The systematics of the giant dipole resonance (GDR) widths in hot androtating nuclei are studied in terms of temperature T, angular momentum J andmass A. The different experimental data in the temperature range of 1 - 2 MeVhave been compared with the thermal shape fluctuation model (TSFM) in theliquid drop formalism using a modified approach to estimate the average valuesof T, J and A in the decay of the compound nucleus. The values of the groundstate GDR widths have been extracted from the TSFM parametrization in theliquid drop limit for the corrected T, J and A for a given system and comparedwith the corresponding available systematics of the experimentally measuredground state GDR widths for a range of nuclei from A = 45 to 194. Amazingly,the nature of the theoretically extracted ground state GDR widths matchesremarkably well, though 1.5 times smaller, with the experimentally measuredground state GDR widths consistently over a wide range of nuclei.

Scaling of the giant dipole resonance widths in hot rotating nuclei from the ground state values