3/20/11
X-ray crystallography
X-rays can be used to determine the structure of a material. This is an application of Bragg's law where x-rays are scattered off a sample into a collector over a range of angles. Certain angles will have more x-rays scatter into the collector than others. Those angles with the highest counts of x-rays will correspond with the Miller indicies of the material.
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it is interesting that with the help of crystallography we can make a 3D picture of the density of electrons inside the crystal. but we have to know the angle and intensities of the diffracted beams.
ReplyDeleteIn fact there are three ways to determine the structure of the crystal
ReplyDelete1- X-ray diffraction
2- Diffraction of electrons
3- Neutron diffraction
moreover, by the third method we can measure the construction of crystal magnetic
since many materials like salts, mineral, semiconductor etc can form a crystal so X-ray crystallography is useful in various field of science to study their properties.
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