laserdiffractionin
Laser diffraction is a particle sizing technique that determines the size distribution of dispersed particles by analyzing the pattern of light scattered from a sample when illuminated with a laser. The angular distribution of scattered light depends on particle size: larger particles preferentially scatter light at small angles, while smaller particles create broader scattering patterns. In practice, the scattering pattern is interpreted with diffraction theory, typically using Mie theory for a full range of sizes and refractive indices, or Fraunhofer approximations for larger particles or simpler cases.
In a typical instrument, a narrow laser beam passes through a sample contained in a cuvette or
Applications of laser diffraction span pharmaceuticals, food and beverage, cosmetics, minerals, and environmental monitoring. It is