The gamma decay of the giant dipole resonance (GDR) in the 132Ce compound nucleus with temperature up to about 4 MeV has been measured, using the reaction 64Ni + 68Zn at Ebeam = 300, 400, and 500 MeV. The gammas and charged particles measured in coincidence with recoils are consistent with a fully equilibratedcompound nucleus emission. The GDR width, obtained with the statistical model analysis, is found to increase almost linearly with temperature. This increase is rather well reproduced within a modelincluding thermal shape fluctuations and the lifetime of the compound nucleus.

The gamma decay of the giant dipole resonance (GDR) in the 132Ce compound nucleus with temperature up to about 4 MeV has been measured, using the reaction 64Ni + 68Zn at Ebeam = 300, 400, and 500 MeV. The gammas and charged particles measured in coincidence with recoils are consistent with a fully equilibrated compound nucleus emission. The GDR width, obtained with the statistical model analysis, is found to increase almost linearly with temperature. This increase is rather well reproduced within a model including thermal shape fluctuations and the lifetime of the compound nucleus.

Giant Dipole Resonance in the Hot and Thermalized 132Ce Nucleus: Damping of Collective Modes at Finite Temperature

E. Geraci;
2006

Abstract

The gamma decay of the giant dipole resonance (GDR) in the 132Ce compound nucleus with temperature up to about 4 MeV has been measured, using the reaction 64Ni + 68Zn at Ebeam = 300, 400, and 500 MeV. The gammas and charged particles measured in coincidence with recoils are consistent with a fully equilibratedcompound nucleus emission. The GDR width, obtained with the statistical model analysis, is found to increase almost linearly with temperature. This increase is rather well reproduced within a modelincluding thermal shape fluctuations and the lifetime of the compound nucleus.
The gamma decay of the giant dipole resonance (GDR) in the 132Ce compound nucleus with temperature up to about 4 MeV has been measured, using the reaction 64Ni + 68Zn at Ebeam = 300, 400, and 500 MeV. The gammas and charged particles measured in coincidence with recoils are consistent with a fully equilibrated compound nucleus emission. The GDR width, obtained with the statistical model analysis, is found to increase almost linearly with temperature. This increase is rather well reproduced within a model including thermal shape fluctuations and the lifetime of the compound nucleus.
RISONANZA GIGANTE; DECADIMENTO GAMMA; NUCLEO COMPOSTO; REAZIONI NUCLEARI; ANALISI STATISTICHE
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/44194
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