Development of Community Light Scattering Computational Capabilities
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This study seeks to develop theoretical and computational methods to improve simulations of optical properties of non-spherical particles over a broad range of size parameters. Applications of the theoretical/computational work span many broad areas of physics, chemistry, and engineering; with specific importance in atmospheric and oceanic sciences, combustion science, astrophysics, bio-optics, manufacturing diagnostics and control, and many other fields. This study will train graduate students and post-doctoral scholars. After testing and optimization, this research group plans to release the computational programs as open-source codes to the research community. This study seeks to expand previous NSF-funded research to develop advanced capabilities based on the invariant imbedding T-matrix method (II-TM) for simulating the optical properties of non-spherical, inhomogeneous particles with small to moderate size parameters. This study seeks to further improve the II-TM from both theoretical and numerical perspectives. This group recently developed a preliminary version of a physical geometric optics model (PGOM) based on either an electromagnetic volume- or a surface-integral relation for large size parameters. The suite of PGOM and II-TM will represent state-of-the-art light scattering computational capabilities, with a wide range of applications in atmospheric/oceanic radiative transfer and remote sensing. This award reflects NSF''s statutory mission and has been deemed worthy of support through evaluation using the Foundation''s intellectual merit and broader impacts review criteria.