Abstract View
Experimental Characterization of Light Backscattering
BLAINE FRY, Christopher Sorensen, Kansas State University
Abstract Number: 169
Working Group: Instrumentation and Methods
Abstract
Climate models and remote sensing schemes require an accurate understanding of backscattering. Thus, there have been a great number of theoretical studies of backscattering in recent years. Despite this and the opportunity to uncover interesting physics, backscattering is largely unexplored empirically. Backscattering is both relatively dim and exceptionally sensitive to variations in particle size, shape, and refractive index. These factors, while creating potential obstacles, underscore the importance of practical characterization. Here we present a facile apparatus for collecting backscattered light in the range 168 to 179 degrees for both co- and cross-polarized scattered light. The apparatus draws strength from simplicity and is capable of the sensitive measurements necessary to characterize backscattering. Results for scattering by spheres and fractal aggregates demonstrate the device’s utility.