High-energy γ rays have been measured in coincidence with heavy fragents in deeply inelastic reactions of Xe136+48Ti at 18.5 MeV/nucleon. The giant dipole resonance (GDR) strength function is deduced from an analysis of the photon spectra within the statistical model. The GDR width Γ is studied as a function of the fragment excitation energy E*. A saturation at about Γ=10 MeV is observed for E*/A≥1.0 MeV/nucleon.

Excitation-energy dependence of the giant dipole resonance width / Enders, G; Berg, F.D.; Hagel, K.; K̈hn, W.; Metag, V.; Novotny, R.; Pfeiffer, M.; Schwalb, O.; Charity, R.J.; Gobbi, A.; Freifelder, R.; Henning, W.; Hildenbrand, K.D.; Holzmann, R.; Mayer, R.S.; Simon, R.S.; Wessels, J.P.; Casini, G.; Olmi, A.; Stefanini, A.A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 69:(1992), pp. 249-252. [10.1103/PhysRevLett.69.249]

Excitation-energy dependence of the giant dipole resonance width

CASINI, GIOVANNI;OLMI, ALESSANDRO;STEFANINI, ANDREA
1992

Abstract

High-energy γ rays have been measured in coincidence with heavy fragents in deeply inelastic reactions of Xe136+48Ti at 18.5 MeV/nucleon. The giant dipole resonance (GDR) strength function is deduced from an analysis of the photon spectra within the statistical model. The GDR width Γ is studied as a function of the fragment excitation energy E*. A saturation at about Γ=10 MeV is observed for E*/A≥1.0 MeV/nucleon.
1992
69
249
252
Enders, G; Berg, F.D.; Hagel, K.; K̈hn, W.; Metag, V.; Novotny, R.; Pfeiffer, M.; Schwalb, O.; Charity, R.J.; Gobbi, A.; Freifelder, R.; Henning, W.; ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1042902
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