Acta Physica Polonica B

Vol. 38, No. 4, April 2007, page 1447

Damping Mechanism of the Giant Dipole Resonance in Hot Nuclei with A=130

O. Wieland, A. Bracco, F. Camera, G. Benzoni, N. Blasi, F.C.L. Crespi, S. Leoni, B. Million, S. Barlini, V.L. Kravchuk, F. Gramegna, A. Lanchais, A. Maj, M. Kmiecik, G. Casini, M. Chiari, A. Nannini, M. Bruno, E. Geraci

The \gamma decay of the Giant Dipole Resonance (GDR) in 132Ce nuclei has been measured using the reactions 64Ni (Elab= 300, 400, 500 MeV) + 68Zn and 16O (Elab= 130,250 MeV) + 116Sn. The analysis of the data shows clearly that the GDR width increases steadily with temperature at least up to 4 MeV of the temperature. The data can be well interpreted within the thermal shape fluctuation model.

PACS numbers: 24.30.Cz, 24.10.Pa, 24.60.Dr, 27.60.+j


 
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