Figure 6
Schematic view of the modified CCD detector. X-rays are converted into fluorescence photons on a screen inclined at a grazing angle of 20° relative to the beam. In such a case, the beam is spread over a large area along the beam direction on the screen and saturation of the CCD detector is avoided. The perpendicular direction is used for the energy–position correlation. Lenses are used to collect as many fluorescence photons as possible and to focus them into the CCD. A demagnification factor of 1:1.75 is used. |