Systematic study of (g,n) reaction rates for Z>=78 isotopes

The (g,n) reaction rates of the isotopes 196,198,204-Hg and 204-Pb have been determined using the photoactivation technique in an energy region relevant for p process nucleosynthesis. The systematic study of the ground-state (g,n) reaction rates on even-even nuclei in the mass region Z>=78 is complemented with these experiments. The data are compared to rates predicted in the framework of two statistical model approaches.