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

Journal Article · Mon Dec 15 04:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.064601· OSTI ID:21199430

Bhattacharya, Srijit ^[1]; Pandit, Deepak; Mukhopadhyay, S; Pal, Surajit; Banerjee, S R ^[2]

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1. Department of Physics, Darjeeling Government College, Darjeeling-734101 (India)
2. Variable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata-700064 (India)

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.

• OSTI ID: 21199430
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
COMPOUND NUCLEI
DECAY
DIPOLES
FLUCTUATIONS
GIANT RESONANCE
GROUND STATES
LIQUIDS
MASS
MEV RANGE 01-10
NUCLEI
SCALING
SIMULATION
TEMPERATURE RANGE