Chapter 13 Small angle xray scattering

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Chapter 13 Small angle x-ray scattering
When it is desirable to detect large lattice
spacings, of order tens or hundreds of
interactomic distances, Minerals Complex
molecules (Polymer and Protein) X-ray
diffraction patterns must be extended to include
very small angles.
Cu Ka 100 Å 0.45º 1000Å
0.045 º
One might consider using longer-wavelength
long-wavelength x-rays are absorbed to a very
great extent in matter -gt complicate
diffraction and detection apparatus -gt
diminishes diffraction intensity
Continuous scattering in the neighborhood of the
direct beam is related To the existence of matter
in the form of small particles, or more
generally To the existence of heterogeneities in
the matter