23 July 1993 Particle tracking through elastic matching
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Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 1983BJ (1993) https://doi.org/10.1117/12.2308834
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary
Abstract
To date, generally, light scattering devices used for the determination of particle size distribution and concentration of particles have been divided as devices for the monitoring of clean rooms (low concentration range) and devices for the measurement of dense aerosols (high concentration range). We report the design and development of a light scattering airborne partic- cle counter that differs both from the well-known optical particle counters, which have forward scattering geometry and a lower limit of registration of 0.5 pm, and the particle counters having a lower limit of registration of 0.1 - 0.3 pm, which have the disadvantage of placing the sampling chamber in- side the laser resonator and passing the particles through the open cavity la- ser. The new design of the opto-mechanical system and electronic makes it possible to use our device in the concentration range 10 - 5 106 partic- les/liter with high resolution of particle size. The use of aerodynamical fo- cusing of the tested air stream and an arrangement that places the measuring chamber outside the laser resonator combined with permanent stabilization of the photomultiplier provides an increase in the reliability of the device. The size detection limit of the system remains low enough (0.2pm).
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vladimir Shapiro, Vladimir Shapiro, } "Particle tracking through elastic matching", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1983BJ (23 July 1993); doi: 10.1117/12.2308834; https://doi.org/10.1117/12.2308834
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