Double Giant Dipole Resonance in ^{208}Pb

Details Double Giant Dipole Resonance in ^{208}Pb Double Giant Dipole Resonance in ^{208}Pb

1997-03-27

arxiv.org/abs/nucl-th/9703059v1

Phys.Rev.C57:1515-1517,1998

Physics

Nuclear Physics

Nuclear Theory

7 pages, Latex, 5 postscript figures

Scientific paper

10.1103/PhysRevC.57.1515

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.

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