Anharmonic properties of double giant dipole resonance

Abstract

A systematic microscopic study of the anharmonic properties of the double giant dipole resonance (DGDR) has been carried out, for the first time, for nuclei with mass number $A$ spanning the whole mass table. It is concluded that the corrections of the energy centroid of the $J^{\pi }=0^{+}$ and $2^{+}$ components of the DGDR from its harmonic limit are negative, have a value of the order of few hundred keV and follow an $A^{-1}$ dependence.

4 pages, 2 figures

References in corpus (6)

• Microscopic Studies on Two-Phonon Giant Resonances
• Variational approach to anharmonic collective motion
• Double Giant Dipole Resonance in ^{208}Pb
• Boson expansion methods applied to a two-level model in the study of multiple giant resonances
• Anharmonic collective excitation in a solvable model
• Two-phonon background for the double giant resonance

Cited by in corpus (9)

• Non-Linear Vibrations in Nuclei
• Microscopic calculations of double and triple Giant Resonance excitation in heavy ion collisions
• Anharmonic vibrations in nuclei
• Studies of the Giant Dipole Resonance in ${}^{27}$Al, ${}^{40}$Ca, ${}^{56}$Fe, ${}^{58}$Ni and ${}^{208}$Pb with high energy-resolution inelastic proton scattering under 0${}^{\circ }$
• Anharmonicities of giant dipole excitations
• On the Excitation of Double Giant Resonances in Heavy Ion Reactions
• Multiple giant resonances in nuclei: their excitation and decay
• Excitation of Triple Giant Resonances in Heavy-Ion Reactions
• Event generator to construct cross sections for the multiphonon excitation of a set of collective vibrational modes