Influence of intranuclear movement of nucleons on shadowing effect of photo absorption at intermediate energies

摘要

The so-called nuclear shadowing effect in dependence of the photo absorption cross section on mass number of the nucleus-target, similar to the phenomenon observed earlier in the hardon scattering on nucleus, has been found at high energies photons(6-20 GeV) some ten years ago. Recently such effect is found and at intermediate energy of photons (1-2.5 GeV). i.e. in the energy region of nucleon resonance exitation.