Isovector Vibrations in Nuclear Matter at Finite Temperature

Abstract

We consider the propagation and damping of isovector excitations in heated nuclear matter within the Landau Fermi-liquid theory. Results obtained for nuclear matter are applied to calculate the Giant Dipole Resonance (GDR) at finite temperature in heavy spherical nuclei within Steinwedel and Jensen model. The centroid energy of the GDR slightly decreases with increasing temperature and the width increases as $T^2$ for temperatures $T<5$ MeV in agreement with recent experimental data for GDR in ${}^{208}$Pb and ${}^{120}$Sn. The validity of the method for other Fermi fluids is finally suggested.

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References in corpus (3)

• Finite Temperature Nuclear Response in Extended Random-Phase Approximation
• Collisional Damping of Nuclear Collective Vibrations in a Non-Markovian Transport Approach
• Damping rates of hot Giant Dipole Resonances

Cited by in corpus (10)

• Breathing mode in an improved transport approach
• Giant-dipole Resonance and the Deformation of Hot, Rotating Nuclei
• Sound modes in hot nuclear matter
• The damping width of giant dipole resonances of cold and hot nuclei: a macroscopic model
• In-medium changes of nucleon cross sections tested in neutrino-induced reactions
• Diffuse approximation to the kinetic theory in a Fermi system
• A dependence of the enhancement factor in energy-weighted sums for isovector giant resonances
• Shape fluctuations in a Fermi system with nonlinear dissipativity
• Gamma-radiation in non-Markovian Fermi systems
• Isovector response and energy-weighted sums in hot nuclei