Question

How do I determine an unknown element if I know the diffraction lines?

Answer 1

Use diffraction gratings to identify elements

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Answer 2

Explanation:

I'm not quite sure if I fully understand x-ray diffraction yet. In a standard XRD experiment, if I'm given the θ values for the Kα and Kβ peaks, I can plug them into Bragg's law to find the spacing between atomic planes, d. How does this help me identify an unknown crystal?

I think if I can determine d, then I can somehow determine the miller indices. Then, I can use

d=a/h2+k2+l2−−−−−−−−−−√

to solve for a. Would a identify the crystal?