Signals from Double Dipole Giant Resonances (DGDR) in hot nuclei have been searched in a gamma-gamma coincidence experiment using the HECTOR array at the Laboratori Nazionali di Legnaro. The experimental single gamma-ray spectrum and the projection of the gamma-gamma matrix have been compared with a standard Monte Carlo Statistical Model code including only the single CDR excitation. These calculations have been used as background to determine the extra-yield associated with the DGDR de-excitation. Results have been compared with a previous experiment confirming the presence of the DGDR excitation in fusion-evaporation reactions.
Double giant dipole resonance in hot nuclei / M. Cinausero, V. Rizzi, G. Viesti, D. Fabris, M. Lunardon, S. Moretto, G. Nebbia, S. Pesente, M. Barbui, E. Fioretto, G. Prete, A. Bracco, F. Camera, B. Million, S. Leoni, O. Wieland, G. Benzoni, S. Brambilla, A. Airoldi, A. Maj, M. Kmiecik. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 731:1-4(2004), pp. 202-207.
Double giant dipole resonance in hot nuclei
A. Bracco;F. Camera;S. Leoni;G. Benzoni;
2004
Abstract
Signals from Double Dipole Giant Resonances (DGDR) in hot nuclei have been searched in a gamma-gamma coincidence experiment using the HECTOR array at the Laboratori Nazionali di Legnaro. The experimental single gamma-ray spectrum and the projection of the gamma-gamma matrix have been compared with a standard Monte Carlo Statistical Model code including only the single CDR excitation. These calculations have been used as background to determine the extra-yield associated with the DGDR de-excitation. Results have been compared with a previous experiment confirming the presence of the DGDR excitation in fusion-evaporation reactions.
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