X-ray diffraction

1. The problem statement, all variables and given/known data

It’s got a diagram in it so I have just attached a picture of it.

2. Relevant equations

nλ=2dsinθ

3. The attempt at a solution

I’ve really got no idea how to proceed with this one. I think you have to consider the effect of the thin film as well. Any ideas?

Attached Images
File Type: jpg 20140211_183605.jpg (80.6 KB)

http://ift.tt/1jtt6TZ

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