Multiphonon and ``hot''-phonon Isovector Electric-Dipole Excitations

Abstract

We argue that a substantial increase in the cross section for Coulomb excitation in the region of the Double Giant Dipole Resonance should be expected from Coulomb excitation of excited states involved in the spreading of the one-phonon resonance, in a manifestation of the Brink-Axel phenomenon. This generates an additional fluctuating amplitude and a corresponding new term to be added incoherently to the usual cross-section. The appropriate extension of an applicable reaction calculation is considered in order to estimate this effect.

6 pages, Latex, 1 figure available on request

References in corpus (1)

• Decay theory of double giant resonances

Cited by in corpus (11)

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• On the Excitation of Double Giant Resonances in Heavy Ion Reactions
• Excitation of Triple Giant Resonances in Heavy-Ion Reactions
• Semiclassical description of multiple giant dipole resonance excitation and decay
• SU(2,1) Dynamics of Multiple Giant Dipole Resonance Coulomb Excitation
• Effective Widths and Effective Number of Phonons of Multiphonon Giant Resonances
• The Semiclassical Coulomb Interaction