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Phys Rev Lett
; 85(7): 1400-3, 2000 Aug 14.
Article
in English
| MEDLINE
| ID: mdl-10970514
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 Jpi = 0(+) and 2(+) components of the DGDR from its harmonic limit are negative, have a value of the order of a few hundred keV, and follow an A-1 dependence.
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