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On the interpolation of light-scattering responses from irregularly shaped particles

AuthorsVideen, Gorden; Zubko, Evgenij; Arnold, Jessica A.; MacCall, Benjamin; Weinberger, Alycia J.; Shkuratov, Yuriy; Muñoz, Olga
KeywordsLight scattering
Inverse scattering
Remote sensing
Issue Date2018
PublisherPergamon Press
CitationJournal of Quantitative Spectroscopy and Radiative Transfer 211: 123-128 (2018)
AbstractCommon particle characteristics needed for many applications may include size, eccentricity, porosity and refractive index. Determining such characteristics from scattered light is a primary goal of remote sensing. For other applications, like differentiating a hazardous particle from the natural background, information about higher fidelity particle characteristics may be required, including specific shape or chemical composition. While a complete characterization of a particle system from its scattered light through the inversion process remains unachievable, great strides have been made in providing information in the form of constraints on particle characteristics. Recent advances have been made in quantifying the characteristics of polydispersions of irregularly shaped particles by making comparisons of the light-scattering signals from model simulant particles. We show that when the refractive index is changed, the light-scattering characteristics from polydispersions of such particles behave monotonically over relatively large parameter ranges compared with those of monodisperse distributions of particles having regular shapes, like spheres, spheroids, etc. This allows for their properties to be interpolated, which results in a significant reduction of the computational load when performing inversions.© 2018
Publisher version (URL)http://dx.doi.org/10.1016/j.jqsrt.2018.03.009
Identifiersdoi: 10.1016/j.jqsrt.2018.03.009
issn: 0022-4073
Appears in Collections:(IAA) Artículos
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