Double Giant Dipole Resonance in ^{208}Pb

Abstract

Double-dipole excitations in ^{208}Pb are analyzed within a microscopic model explicitly treating 2p2h-excitations. Collective states built from such 2p2h-excitations are shown to appear at about twice the energy of the isovector giant dipole resonance, in agreement with the experimental findings. The calculated cross section for Coulomb excitation at relativistic energies cannot explain simultaneously the measured single-dipole and double-dipole cross sections, however.

7 pages, Latex, 5 postscript figures

Cited by in corpus (9)

• Microscopic Studies on Two-Phonon Giant Resonances
• Collective nuclear excitations with Skyrme-Second RPA
• Low-lying dipole response in the stable ${}^{40,48}$Ca nuclei with the second random-phase approximation
• Anharmonic properties of double giant dipole resonance
• Anharmonic collective excitation in a solvable model
• Transport properties for a Luttinger liquid wire with Rashba spin-orbit coupling and Zeeman splitting
• On the Excitation of Double Giant Resonances in Heavy Ion Reactions
• Double giant resonances in deformed nuclei
• Double giant dipole resonances in time-dependent density-matrix theory