Definition: Portable X-Ray Diffraction (XRD)
Portable X-Ray Diffraction (XRD)
Portable X-Ray Diffraction (XRD) is a field-based technique that can be used for identification of crystalline materials and analysis of unit cell dimensions. Portable XRD analysis is similar to X-ray powder diffraction, which has traditionally been used in geology, environmental science, material science, and engineering to rapidly identify unknown crystalline substances. Portable XRD analysis allows for simpler sample preparation, faster analytical times than traditional methods (less than 2 minutes), and can be performed at the sampling site in the field. A pure, finely ground sample is required for determination of the bulk composition and identification of fine-grained minerals.
- Powder diffraction is a scientific technique using X-ray, neutron, or electron diffraction on powder or microcrystalline samples for structural characterization of materials. An instrument dedicated to performing such powder measurements is called a powder diffractometer.Powder diffraction stands in contrast to single crystal diffraction techniques, which work best with a single, well-ordered crystal.