Two-phonon giant resonances in 136Xe, 208Pb, and 238U

K. Boretzky, A. Grünschloß, S. Ilievski, P. Adrich, T. Aumann, C. A. Bertulani, J. Cub, W. Dostal, B. Eberlein, Th W. Elze, H. Emling, M. Fallot, J. Holeczek, R. Holzmann, C. Kozhuharov, J. V. Kratz, R. Kulessa, Y. Leifels, A. Leistenschneider, E. LubkiewiczS. Mordechai, T. Ohtsuki, P. Reiter, H. Simon, K. Stelzer, J. Stroth, K. Sümmerer, A. Surowiec, E. Wajda, W. Walus

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37 Scopus citations


The excitation of the double-phonon giant dipole resonance was observed in heavy projectile nuclei impinging on targets of high nuclear charge with energies of 500–700 MeV/nucleon. New experimental data are presented for [Formula Presented] and [Formula Presented] together with further analysis of earlier data on [Formula Presented] Differential cross sections [Formula Presented] and [Formula Presented] for electromagnetic excitations were deduced. Depending on the isotope, cross sections appear to be enhanced in comparison to those expected from a purely harmonic nuclear dipole response. The cumulative effect of excitations of two-phonon states composed of one dipole and one quadrupole phonon, of predicted anharmonicities in the double-phonon dipole response, and of damping of the dipole resonance during the collision may account for the discrepancy. In addition, decay properties of two-phonon resonances were studied and compared to that of a statistical decay.

Original languageEnglish
Article number024317
Pages (from-to)243171-2431717
Number of pages2188547
JournalPhysical Review C - Nuclear Physics
Issue number2
StatePublished - 1 Jan 2003

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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