Small-angle photon scattering on complex nuclei |
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| Authors: | L. Criegee G. Franke A. Giese Th. Kahl G. Poelz U. Timm H. Werner W. Zimmermann |
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| Affiliation: | Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany |
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| Abstract: | Photons of 3 GeV and 5 GeV were scattered on 7 different elements, ranging from Be to Au, and detected with a pair spectrometer. The angular distributions show diffractive patterns consistent with known nuclear sizes. Forward cross sections are 20–30% lower than expected from an A2 dependence. This shadowing effect is qualitatively explained by photon interactions via intermediate hadronic states. |
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