A miniature fiberoptic probe has been developed for in-situ particle size measurements. The probe is based on a near-forward scattering technique and makes use of a two color scheme in which one wavelength is used for the size measurement while the second wavelength is used to monitor the presence of a particle in the center of the scattering volume. Tests of the probe have shown particle size range and sensitivity similar to that observed using fixed lens train systems but with the advantages of portability, ease of remote access and inherent alignment stability.
A miniature fiberoptic probe for optical particle sizing
Phillip H. Paul, George Kychakoff; October 14–18, 2018. "A miniature fiberoptic probe for optical particle sizing." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® ‘86: Proceedings of the Flow & Particles Diagnostics Conference. Orlando, FL, USA. (pp. pp. 122-128). ASME. https://doi.org/10.2351/1.5057794
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