DLS-type real time particle size analyzer

摘要

The present invention relates to a particle size that can be measured at a high speed and the size distribution of the nano and micron particle analyzer.; Dynamic light scattering type particle size analyzer is a laser light source for vertical polarized green light to be oscillated as NO Stadium YAG laser is pumped by the laser diode provided with a laser diode to the drawing of the present invention; Reflecting mirror for reflecting the light from the laser light source;; Automatic light amount adjuster for a light reflected from the reflector to adjust the amount of light radiated on the sample; Beam splitter is sent to the photodiode and the focusing lens to divide the light from the automatic light quantity regulator; Cuvette in which the sample contained; When the focusing lens is focused on the light irradiated on the sample, scattered light collecting lens for collecting the scattered light by the colloidal particles dispersed in a solvent of the sample; Peltier cooler / heater to automatically control the temperature of the sample; Beam blocker to cause completely block the beam that has passed through the sample; Pin hole portion for focusing the light from said light collecting lens collects the scattered light; Madness pipe for detecting the intensity of the scattered light into an electric signal in the light spreads through the pin hole portion; A signal processor for generating a pulse signal having a number of pulses proportional to the light intensity from the output signal of the photomultiplier pipe; Digital correlator for calculating an auto-correlation function from the output signal from the signal processing section; It characterized in that it includes the; from the output signal of the digital correlator control computer for calculating the size of the particles.; In addition, the control computer, receives the output signal of the digital correlator for a predetermined time, stores the average value of the received signal, the correlation function fitting (fitting) the extinction curve in coke sh (Kohlrausch) expanded exponential function and, therefrom calculating a parameter obtained as numerical Laplace decay time (decay time) distribution curve, and an inversion, Stoke-characterized in that it displays a grain size distribution by Einstein (Stokes-Einstein) expression.