Interaction of X-ray with materials

Interaction of X-Ray with Materials
- Practical Electron Microscopy and Database -
- An Online Book -

Microanalysis | EM Book https://www.globalsino.com/EM/

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In the interaction of X-rays with materials, some of the x-rays will be absorbed, and some will be transmitted or diffracted through the material listed in Table 1205. The degrees of absorption/fluorescence, Compton and Rayleigh scatter and transmission depends on:
         i) X-Ray energy
         ii) Sample thickness
         iii) Materials density
         vi) Materials composition.

Table 1205. Interaction of X-ray with materials.

Interaction	Mechanism	Application
Rayleigh scatter, Diffracted X-rays	Scattering without loss of energy (re-radiate waves with the same frequency), from bound charges, coherent scatter	X-ray diffraction (XRD)
Compton scatter	Scattering with loss of energy, from loosely bound charges, incoherent scatter
Fluorescence	When absorption occurs	X-ray fluorescence (XRF)
Transmitted X-rays	Direct transmission
Auger electron	Electron ejected from atoms by absorbing energy from X-ray	Auger electron spectroscopy (AES)
Photoelectrons	Emitted electrons	X-ray photoelectron spectroscopy (XPS)

Interaction of X-ray with materials

Figure 1205. Phenomena of X-ray interaction with materials.

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