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arXiv · 1305.3360

Giant dipole resonance width as a probe for nuclear deformation at finite excitation

Deepak Pandit·Balaram Dey·Debasish Mondal·S. Mukhopadhyay·Surajit Pal·Srijit Bhattacharya·A. De·S. R. Banerjee
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Abstract

The systematic study of the correlation between the experimental giant dipole resonance (GDR) width and the average deformation <β> of the nucleus at finite excitation is presented for the mass region A ~ 59 to 208. We show that the width of the GDR (Γ) and the quadrupole deformation of the nucleus do not follow a linear relation, as predicted earlier, due to the GDR induced quadrupole moment and the correlation also depends on the mass of the nuclei. The different empirical values of <β> extracted from the experimental GDR width match exceptionally well with the thermal shape fluctuation model. As a result, this universal correlation between <β> and Γprovides a direct experimental probe to determine the nuclear deformation at finite temperature and angular momentum in the entire mass region.

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Deepak Pandit, Balaram Dey, Debasish Mondal, S. Mukhopadhyay, Surajit Pal, Srijit Bhattacharya, A. De, S. R. Banerjee. 2013-05-15. Giant dipole resonance width as a probe for nuclear deformation at finite excitation. https://doi.org/10.1103/physrevc.87.044325

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