AAAR 33rd Annual Conference
October 20 - October 24, 2014
Rosen Shingle Creek
Orlando, Florida, USA
Abstract View
Q-space Analysis of Light Scattering by Gaussian Random Spheres
JUSTIN MAUGHAN, William Heinson, Amit Chakrabarti, Chris Sorensen, Kansas State University
Abstract Number: 235 Working Group: Aerosol Physics
Abstract The majority of previous work done with light scattering has been analyzed by plotting the scattered intensity vs. the scattering angle. Q-space analysis, however, examines the scattered intensity as a function of q, the scattering wave vector, or the dimensionless quantity qR, where R is the equivalent radius of the scatterer. When analyzed in Q-space, power law functionalities are found that can be used to describe quantitatively a wide variety of particle shapes. Here we study Q-space analysis applied to scattering from Gaussian Random Spheres (GRS). GRS are described by three parameters, a, the mean radius, nu, the power law exponential, and sigma, the standard deviation of the radii. A dipole dipole approximation (DDA) was used to calculate the scattered light from GRS over a range of size parameters, relative indices of refraction, and sigma. When analyzed in Q-space, the light scattering from GRS exhibit power laws similar to those that have been found from a variety of other shapes. The power law exponents are a function of the phase shift parameter rho.