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Master of Science (MS)




Not Specified


For the sake of completeness, it was felt that a brief resume' of x-ray scattering theory as it affects the alignment procedure of a two crystal spectrometer would be beneficial.

X-ray diffraction from a single crystal slab.

W. L. Bragg (1912) tried the experiment of reflecting a beam of x-rays from the cleavage surface of a crystal and found on the photo-graphic plate a spot at the angle of reflection. He then replaced the photo graphic plate with an ionization chamber which he mounted so that it could be rotated about the axis upon which the reflecting crystal is mounted. He then rotated the reflecting crystal with respect to the incoming x-ray beam and plotted the ionization as a function of the reflecting angle. It was found that at certain angles the ionization current would reach a sharp maximum.

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