1. Principle of powder diffraction
1.1 Diffraction theory and Bragg's law
When X-rays (photons) interact with the atoms of matter, numerous phenomena occur, with the relative prevalence of these phenomena varying depending on the energy of the radiation. Here we will focus only on the case of elastic scattering, when the material emits a beam of the same wavelength as the incident radiation, transforming from a plane wave to a spherical wave.
Since the atoms in crystalline matter are arranged in a repeating pattern, the interference between the scattered waves is constructive in certain directions. This stronger signal corresponds to the phenomenon of diffraction, which occurs when Bragg’s law is satisfied (Figure 1 ):...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Principle of powder diffraction
Experimental setups and configurations
Article included in this offer
"Analysis and Characterization"
(
271 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
