Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-09-24
Phys.Rev.C78:064601,2008
Physics
Nuclear Physics
Nuclear Experiment
15 pages, 4 figures, Accepted for publication in Physical Review C
Scientific paper
10.1103/PhysRevC.78.064601
The systematics of the giant dipole resonance (GDR) widths in hot and rotating nuclei are studied in terms of temperature T, angular momentum J and mass A. The different experimental data in the temperature range of 1 - 2 MeV have been compared with the thermal shape fluctuation model (TSFM) in the liquid drop formalism using a modified approach to estimate the average values of T, J and A in the decay of the compound nucleus. The values of the ground state GDR widths have been extracted from the TSFM parametrization in the liquid drop limit for the corrected T, J and A for a given system and compared with the corresponding available systematics of the experimentally measured ground state GDR widths for a range of nuclei from A = 45 to 194. Amazingly, the nature of the theoretically extracted ground state GDR widths matches remarkably well, though 1.5 times smaller, with the experimentally measured ground state GDR widths consistently over a wide range of nuclei.
Banerjee S. R.
Bhattacharya Srijit
Mukhopadhyay Subhadeep
Pal Surajit
Pandit Deepak
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