X-ray Diffraction from Graphite in the Energy Range 2 to 8 keV

We report x-ray diffraction measurements from highly oriented pyrolytic graphite over the energy range 2 to 8 keV. The measured reflectivity exhibits an energy dependence which closely follows that predicted for an ideally imperfect graphite crystal, although the reflectivity itself is a factor of 1.5 less than the calculated value.