  Photoproduction of eta mesons from nucleons can provide valuable information
about the excitation spectrum of the nucleons. The angular dependence of
photoproduction in the photon-induced reaction is investigated in the
multi-source thermal model. The results are compared with experimental data
from the decay mode. They are in good agreement with the experimental data. It
is shown that the movement factor increases linearly with the photon beam
energies. And, the deformation and translation of emission sources are visually
given in the formalism.
