Xrd data8/11/2023 Therefore, different crystals have different diffraction patterns. The intensity of diffraction lines depends on the species of atoms and their positions in the unit cell. The diffraction pattern produced by each crystal reflects the distribution of atoms inside the crystal.Īccording to the above XRD principles, the main characteristics of the diffraction pattern of a crystal are two:ġ) the distribution law of diffraction lines in space Ģ) the intensity of the diffraction beam.Īmong them, the distribution law of diffraction lines is determined by the size, shape, and orientation of the unit cell. The diffraction phenomenon of X-rays in crystals is essentially the result of mutual interference of scattered waves of a large number of atoms. The frequency of the emitted spherical waves corresponds to the incident X-rays.īased on the periodicity of the crystal structure, the scattered waves of the individual atoms (electrons on the atoms) in the crystal can interfere with each other and superimpose, called coherent scattering or diffraction. When a beam of monochromatic X-rays is irradiated on the crystal, the electrons around the atoms in the crystal vibrate under the action of the X-ray periodically changing the electric field, so that each electron becomes a secondary wave source that emits spherical electromagnetic waves. This article mainly introduces you to the XRD principle and the practice usage of XRD analysis to help you learn XRD from theory to practice. Polarimeters & Refractometer & Melting Point Meter Expand.GCMS (Gas Chromatograph and Mass Spectrometry).Inductively Coupled Plasma Mass Spectrometer.Full Spectrum Direct Reading Spectrometer.Atomic Absorption Spectrophotometer (AAS).
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