Figure 7
A diagram of polarization changes after diffraction at each crystal. P0 is the incoming-beam polarization from the source (horizontal polarization). P1 and P2 are polarization vectors (they also represent the polarization factors) after diffraction from the first and the second crystal, respectively. α′ and β′ are the polarization angles after diffraction measured from the crystals. X1 represents the first crystal and X2 represents the second crystal. |