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- W2790471856 abstract "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 136Xe and 238U together with further analysis of earlier data on 208Pb. Differential cross sections dσ/dE* and dσ/dθ 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.Received 9 April 2003DOI:https://doi.org/10.1103/PhysRevC.68.024317©2003 American Physical Society" @default.
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- W2790471856 date "2003-08-28" @default.
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- W2790471856 title "Two-phonon giant resonances in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>136</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant=normal>Xe</mml:mi><mml:mo>,</mml:mo></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>208</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant=normal>Pb</mml:mi><mml:mo>,</mml:mo></…" @default.
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- W2790471856 doi "https://doi.org/10.1103/physrevc.68.024317" @default.
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