My report is made easier by the fact that work on pion photoproduction with polarized x-rays is going on at only three places: DESY, Frascati, and Stanford. I shall confine myself largely to work which has taken place since the DESY conference. Diambrini will discuss later the problems of making polarized x-rays, but I will mention some of these problems since they determine what data is possible and also seriously affect the reliability. The technique used at Stanford is to select from the normal bremsstrahlung a polarized component. Figure 1 shows the polarization from a 10-3 radiation length target. The polarization is never large and is only appreciable when the photon energy is considerably less than the peak beam energy. It is therefore difficult to determine the photon energy unless one is dealing with a two body final state. Backgrounds of pair production must be eliminated either kinematically or by a detailed study indicating that they are small. The net resul
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