Abstract
The evolution of the giant dipole resonance (GDR) in hot 120Sn and 208Pb nuclei was studied by measuring high energy γ-rays from the decay of the resonance. The excited nuclei were populated by inelastic scattering of α-particles at 40 and 50 MeV/nucleon. The resonance width was observed to increase systematically with excitation energy in both systems. Inelastic scattering populates low angular momentum states in the target. The observed width increase is thus attributed to fluctuations in the nuclear shape induced by temperature.
Original language | English |
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Pages (from-to) | 49-55 |
Number of pages | 7 |
Journal | Nuclear Physics A |
Volume | 599 |
Issue number | 1-2 |
DOIs | |
State | Published - Mar 18 1996 |