DOE OSTI · 3375202
High-speed particle analysis using forward and backward two-dimensional angular optical scattering
Abstract
Measurement of two-dimensional angle-resolved optical scattering (TAOS) patterns is an attractive technique for detecting and characterizing micron-sized high-speed flying particles. The elastic-scattering intensity pattern from a single particle as a function of spherical coordinate angles θ and ϕ provides detailed information on the particle’s morphology. By use of an ellipsoidal reflector and a high-speed CCD camera, scattering from a CW-laser was detected and resolved over a large angular range (θ from 12° to 168° and ϕ from 0° to 360°) from spherically shaped particles (e.g., amorphous silica and borosilicate glass) flowing through the reflector’s focal plane at speeds of 20 to 30 m/s. The scattering pattern from individual particles flying through the focal plane of the ellipsoid mirror provides insights about a particle’s size, clustering, roughness, and velocity.
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Black, Nazila [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Marsh, Andrew [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Akin, Minta [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Armstrong, Michael [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000323751491), Plascencia, Miguel [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Daeumer, Matthias [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Clark, Jerry [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Frank, Matthias [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Ackerman, Alison [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Jin, Frank [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:000900015942214X), Whitworth, Tony [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Holdener, Don [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Aptowicz, Kevin B. [West Chester Univ., PA (United States)]. 2026-06-02. High-speed particle analysis using forward and backward two-dimensional angular optical scattering. https://doi.org/10.1364/ol.597612
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