Rotating calibration reticles have been developed for use with imaging and scattering type single particle counters. Theoretical calculations of light diffracted by the reticles are compared to light scattered by water droplets of the same diameter to determine their suitability as substitute particles for calibration purposes. For imaging type instruments the reticle is shown to create an image that is nearly identical to that of a water droplet. For the scattering type instruments a transfer function is needed to compare the reticle with droplets. A transfer function is developed for one kind of instrument: the Forward Scattering Spectrometer Probe manufactured by Particle Measuring Systems, Inc.
Topics
Scattering spectroscopy
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© 1987 Laser Institute of America.
1987
Laser Institute of America
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