Influence of damping on the excitation of the double giant resonance
G. Baur1 - C.A. Bertulani2 - D. Dolci2
1 IKP, Forschunszentrum Jülich, Postfach 1913, 52425 Juelich, Germany
2 Instituto de Física, Universidade Federal do Rio de Janeiro 21945-970 Rio de Janeiro, RJ, Brazil
Received: 13 July 1999 Communicated by P. Schuck
We study the effect of the spreading widths on the excitation probabilities of the double giant dipole resonance. We solve the coupled-channels equations for the excitation of the giant dipole resonance and the double giant dipole resonance. Taking Pb+Pb collisions as example, we study the resulting effect on the excitation amplitudes, and cross sections as a function of the width of the states and of the bombarding energy.
24.10.Eq Coupled-channel and distorted wave models - 24.30.Cz Giant resonances - 25.70.De Coulomb excitation
Copyright Società Italiana di Fisica, Springer-Verlag 2000