Introduction to X-ray Diffraction

Автор: Taylor Sparks

Загружено: 2018-09-28

Просмотров: 14842

Описание:

0:00 how did scientists originally determine crystal structure?
2:11 discovery of X-rays by Wilhelm Rontgen
3:51 double slit experiment for constructive and destructive interference
9:02 William Bragg discovers X-ray diffraction
10:24 illustration of planes of atoms and their interplanar spacing.
14:58 constructive vs destructive interference
16:23 Constructive interference as a tool for measuring interplanar spacing
20:13 Bragg's Law
21:23 calculating interplanar spacing, d
24:22 example of calculating interplanar spacing
30:51 why certain (hkl) peaks cause XRD reflections but others do not even though they satisfy Bragg's law
33:56 example of calculating allowed/disallowed (hkl) reflections and determining their 2 theta position
49:01 Measuring X-ray diffraction and using XRD patterns to identify crystal structure using matching software

$Introduction to X-ray Diffraction$

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