X-ray CrystallographyWatch

#1
Hey! i am currently doing CIE A2 chemistry. I really don't understand x-ray crystallography and I would really appreciate it if some explains to me the basis on which this technique works.

P.S: I attached the first part from the application booklet tht speaks of this concept
0
8 years ago
#2
well, tell you what, read up on more textbooks, and use other online resources, don't just depend on one single book if you don't find it helpful. it is about time to start working independently instead of being told everything.

read up on little bit here,
http://www.alchemyst.co.uk/alchemyst...iffraction.pdf

this is an undergraduate level note, so tune them accordingly to your needs.
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#3
I read about it on Wikipedia and another site but the part about Bragg’s Law wasn't clear enough. so I thought someone might have a better explanation.

0
8 years ago
#4
(Original post by Nera)
I read about it on Wikipedia and another site but the part about Bragg’s Law wasn't clear enough. so I thought someone might have a better explanation.

tbh, the thing with bragg law is that as long as you understand the derivation, you can use it safely, knowing that the derivation is trivial.

it involves simple trigonometry, see the first few pages on the pdf link.
essentially, for constructive interference, path length(the extra length the radiation has to travel) must be multiples of half wavelengths, ie dsin theta = n/2 lambda

not of any use here, but it is worth knowing that for destructive interference, path length, d sin theta = multiples of wavelengths = ie n lambda

with those ideas + simple trig, you should be able to derive braggs law easily.
1
8 years ago
#5
(Original post by Nera)
I read about it on Wikipedia and another site but the part about Bragg’s Law wasn't clear enough. so I thought someone might have a better explanation.

Try this for size...

0
#6
Thanks alot !
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