Total Photo-Absorption of Actinide Nuclei at Intermediate Energies

A brief review on photo-absorption and photo-fission of actinide nuclei at intermediate energies is given. To explain the experimental data for ²³⁷Np which contradict to universal behavior of the photo-absorption process vs the nuclear mass, we extrapolate the data on electromagnetic dissociation of relativistic heavy ions to the photo-fission cross section.