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X-ray diffraction methods

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Reference no: EM13947986

X-ray Diffraction Methods

1. A particular crystal has a set of parallel layers at a d-spacing of 8.50 Å.  At what angle does the X-ray beam have to be placed to obtain a diffraction peak using copper Kα radiation (1.542 Å).

2.  (a)     The first order diffraction peak occurs at 2θ = 13.0o for a crystalline powder when the radiation is CuKα, λ = 1.542 Å.  What is the d-spacing for the set of planes giving rise to this peak?

         (b)     Do the same calculation using MoKα radiation, λ = 0.7101 Å but keep the angle the same.

         (c)     Use the same d-spacing calculated in part (a).  At what angle would the peak occur for this spacing if the radiation is MoKα?

         (d)    Rationalize the results obtained in parts (b) and (c).

Reference no: EM13947986

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