Scattering of X-Rays
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An X-ray beam that passes through an absorber is attenuated. The degree of attenuation depends upon both photoabsorption and scattering processes. Scattering occurs when an X-ray photon interacts with one of the electrons of the absorbing element. If this collision is elastic (no energy is lost in the collision process), the scattering is said to be coherent (Rayleigh scattering). Because no change of energy is involved, the coherently scattered radiation remains unmodified (same wavelength as the incident beam), and there is a definite relationship between the phase of the scattered beam and that of the incident beam. X-ray diffraction is a special case of coherent scattering. In X-ray spectroscopy, this diffraction process provides a method for the wavelength separation.
KeywordsRaman Line Coherent Scattering Plasmon Peak Scattered Beam Recoil Electron
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