Two-dimensional angular optical scattering (TAOS) is a non destructive means of investigating small particles. Three types of materials are studied: a) polycrystalline tryptophan aggregates, which serve as reference, b) a mixture of tire debris and talc crystals coming from laboratory wear tests, c) dust from a residential, urban area collected by an electrostatic precipitator. Particles are produced from water suspension by an ink-jet aerosol generator and then illuminated by a laser beam. The scattered intensity is recorded within a solid angular sector in the backward domain. The goals of this investigation are 1) to obtain signatures of materials, based on scattering patterns and 2) to justify the experimental results by numerically solving the forward scattering problem.
Crosta, G., Camatini, M., Holler, S., Pan, Y., Ambrosio, S., Corbetta, G., et al. (2000). Two-dimensional angular optical scattering (TAOS) by environmental specimens: preliminary results. In G.W. Videen, Q. Fu, P. Chylek (a cura di), Light Scattering by Nonspherical Particles: Halifax Contributions (pp. 5-8). Adelphi, MD : Army Research Laboratory.
Two-dimensional angular optical scattering (TAOS) by environmental specimens: preliminary results
CROSTA, GIOVANNI FRANCO FILIPPOPrimo
;CAMATINI, MARINA CARLA;
2000
Abstract
Two-dimensional angular optical scattering (TAOS) is a non destructive means of investigating small particles. Three types of materials are studied: a) polycrystalline tryptophan aggregates, which serve as reference, b) a mixture of tire debris and talc crystals coming from laboratory wear tests, c) dust from a residential, urban area collected by an electrostatic precipitator. Particles are produced from water suspension by an ink-jet aerosol generator and then illuminated by a laser beam. The scattered intensity is recorded within a solid angular sector in the backward domain. The goals of this investigation are 1) to obtain signatures of materials, based on scattering patterns and 2) to justify the experimental results by numerically solving the forward scattering problem.
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Halifax_2000.doc
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Descrizione: TAOS patterns from tryptophan aggregates, rubber and talc, Milan dust.
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470.5 kB | Microsoft Word | Visualizza/Apri |
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