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Published November 1, 1981 | public
Journal Article Open

Photon scattering studies of the giant dipole resonance in medium weight nuclei


Quasimonochromatic photons have been used to measure elastic and inelastic photon scattering cross sections in the giant dipole resonance region of 52Cr, Fe, 60Ni, 92Mo, and 96Mo in an experiment in which the elastic and inelastic scattering are resolved. The elastic scattering cross sections show clear evidence for isospin splitting of the giant dipole resonance. The inelastic scattering to low-lying vibrational levels, which is a measure of the coupling between the giant dipole resonance and collective surface vibrations, is in qualitative agreement with the predictions of the dynamic collective model. However, when examined in detail, this model does not provide an adequate description of the scattering data.

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©1981 The American Physical Society. Received 26 May 1981. We gratefully acknowledge the participation of Dr. Richard Starr in the early stages of this research. The research carried out by the University of Illinois staff, including the development and operation of MUSL-2 and its experimental areas, was supported by the National Science Foundation. The research carried out by the Argonne staff was supported by the Department of Energy.


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