AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Q-Space Analysis of Light Scattering from Gaussian Random Spheres
JUSTIN MAUGHAN, Chris Sorensen, Amit Chakrabarti, Kansas State University
Abstract Number: 401 Working Group: Aerosol Physics
Abstract Q-space analysis is applied to the light scattered intensity from Gaussian Random Spheres (GRS). Q-space analysis involves plotting the scattered intensity vs. the scattering wave vector q=2ksin(theta/2) where k = 2pi/lambda and theta is the scattering angle on a log-log plot. The light scattering properties of GRS with sigma = 2 and nu =3, where sigma is the relative standard deviation in the radial direction, and nu describes fluctuations in the angular direction, were systematically studied with size parameters ranging from 10 to 30, with a relative index of refraction, m, ranging from 1.01 to 1.5. The scattered intensity was calculated using a Discreet Dipole Approximations (DDA). The results show, as has been found previously in spheres and a variety of other irregular shapes, power law descriptions of the scattering and a Rayleigh functionality of the forward scattered intensity that depend upon the modified phase shift parameter rho’ = 2kR|(m$^2 - 1)/(m$^2 + 2)| where R is the volume equivalent radius. These results continue the implication that there is a comprehensive description of light scattering for all particles that can be uncovered with the application of Q-space.