Abstract:
Generator of monodisperse aerosols, which forms fine droplets of liquid of equal size by breaking a liquid bridge formed from a constant liquid volume between curved contact surfaces comprising a capillary filled with a liquid and having a blade-like projection at the outlet end strand means such as a wire or fiber of which one extremity is attached to an oscillatory or vibrating means or device having a cylindrical portion at the one extremity thereof and which is arranged so as to be located in the dead center of the extreme limits of oscillations, the strand means being a contact with the blade-like projection of the capillary and with the surface level of the liquid in the capillary, and means for directing a supply of a gaseous phase for breaking the liquid bridge located substantially perpendicular to that of the strand motion.
Abstract:
An analyzer for aerosols has a transparent heating chamber in which a mixture of the aerosol to be analyzed and of a dilutent is heated to the emission temperature of the dispersee particles in the aerosol, the dilution being sufficient to produce sequential light pulses from the emitting particles. The pulses of a desired wavelength are transmitted through a filter to a photomultiplier whose output pulses are analyzed in a known manner to obtain data on concentration, size distribution and composition of the dispersed particles.