Laser diffraction analysis also known as laser diffraction spectroscopy is a technology that utilizes diffraction patterns of a laser beam passed through any object ranging from nanometers to millimeters in size to quickly measure geometrical dimensions of a particle.
Laser diffraction particle size analyzer working principle.
Laser diffraction measures particle size distributions by measuring the angular variation in intensity of light scattered as a laser beam passes through a dispersed particulate sample.
Light scatters more intensely and at smaller angles off of large particles than small particles.
A guide to understanding laser diffraction principles theory.
Hundreds of refinements to the basic design have been included to improve performance and usability.
Ls 13 320 particle size analyzer.
The ls 13 320 series is the most versatile and sophisticated laser diffraction particle sizing analyzer available today.
As a technique that measures particle size distribution for both wet and dry dispersions it offers many advantages including a high level of precision fast response.
A typical laser diffraction optical system will include.
At its very most basic laser diffraction is about the relationship between particle size and the angle and intensity of scattered light.
Particle sizing by laser diffraction.
80 photodetectors covering an approximate angular range of 0 170 degrees.
Laser diffraction has become one of the most commonly used particle sizing methods especially for particles in the range of 0 5 to 1000 microns.
Large particles scatter light at small angles relative to the laser beam and small particles scatter light at large angles as illustrated below.
It works on the principle that when a beam of light a laser is scattered by a group of particles the angle of light scattering is inversely proportional to particle size ie.
Every analyzer from the very first commercial prototype to the state of the art la 960 utilizes this principle.
The ls 13 320 offers the highest resolution reproducibility and unsurpassed accuracy.
Very high quality lenses mirrors and glass measurement cell.
978 0 521 04461 5 principles methods and application of particle size analysis.
Two light sources at different wavelengths.
The smaller the particle size the larger the angle of light scattering.
The principle of laser diffraction is the relationship that exists between light scattering its angle and intensity and particle size.
