X-ray reflection and the structure of diamond

Abstract

Laue photographs with the X-ray beam normal to the surface (111) planes have been taken for two typical bluc-fluorescent diamonds exhibiting widely different intensities of fluorescence, but similar in other respects. Microphotometry of the peak intensity of the various spots shows that although the intensity of all the spots is greater with the more fluorescent diamond, the ratio (r) of the intensities of the corresponding spots varies. Empirically, it is found that (r-1) is proportional to the product of the structure factor, the wave-length reflected and a function of the angle of incidence.