INTERNATIONAL JOURNAL OF MODERN PHYSICS E, cilt.13, sa.5, ss.949-959, 2004 (SCI-Expanded)
We study isovector collective excitations in nuclear matter by employing the linearized Landau-Vlasov equation with and without a non-Markovian binary collision term at finite temperature. We calculate the giant dipole resonance (GDR) strength function for finite nuclei using the Steinwedel-Jensen model and also by Thomas-Fermi approximation, and we compare them for Sn-120 and Pb-208 with experimental results.