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Temperature dependence of a spreading width of giant dipole resonance in neutron-rich nuclei

Authors
Journal
Nuclear Physics A
0375-9474
Publisher
Elsevier
Publication Date
Volume
722
Identifiers
DOI: 10.1016/s0375-9474(03)01415-5

Abstract

Abstract A temperature dependence of the spreading width of a giant dipole resonance is studied in the framework of the Quasiparticle-Phonon Model extended to finite temperature using a formalism of the Thermo Field Dynamics. Numerical calculations are performed for 120Sn and the neutron-rich double-magic isotope 132Sn It is found that the dispersion of the E1 strength function σ increases with temperature.

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