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Measurements examine photonuclear absorption in nuclei, highlighting lack of baryon resonances.
We present the results of measurements of the total photonuclear absorption of light, medium-heavy and heavy nuclei carried on at Frascati with 200-1200 MeV monochromatic photons, to obtain information on the excitation of baryon resonances in nuclei and on the possible onset of the shadowing effect. The results show no evidence of baryon resonances at about 700 and about 1000 MeV seen in the photon absorption on the proton and the deuteron.
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M. et al. (1993) studied this question.
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