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Coherent photoproduction of \pi 0\eta\ on the deuteron, He3 and He4 nuclei isconsidered in the energy region from threshold to the lab photon energy 1.2GeV. The transition amplitude is derived using impulse approximation. Effectsof pion absorption are included by means of the Fernbach-Serber-Taylor model.Interaction of the produced \eta-mesons with the recoiled nucleus is taken intoaccount for the reactions on d and He3. The corresponding \eta d and \eta He3scattering amplitudes are obtained as solutions of the few-body equations for\eta NN and \eta-3N systems. Impact of this interaction on the differentialcross section in the region of small relative \eta-nuclear momenta isdiscussed.

Coherent \pi 0\eta\ photoproduction on s-shell nuclei