  Photon-to-axion conversions in the static electromagnetic fields are
reconsidered in detail by using the Feynman diagram techniques. The
differential cross sections are presented for the conversions in the presence
of the electric field of the flat condenser as well as in the magnetic field of
the solenoid. Based on our results a laboratory experiment for the production
and the detection of the axions is described. This experiment will exploit the
axion decay constant as well as the axion mass.
