AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Backscatter from Liquid Drop Aeorsol
BRENDAN HEFFERNAN, Yuli Heinson, Justin Maughan, Amit Chakrabarti, Chris Sorensen, Kansas State University
Abstract Number: 519 Working Group: Aerosol Physics
Abstract We have successfully built and calibrated an apparatus to measure the backscattering phase function from 165 to 182 degrees, possibly the first of its kind. Measurements on liquid water droplets generated from an atomizer continue to disagree with Mie calculation, leading us to conclude non-sphericity in the droplets due to oscillations or “ringing”. These conclusions are consistent with the measured S22/S11 scattering matrix elements measured from 0.3 to 157 degrees and with theoretical calculations showing extreme sensitivity of the phase function on sphericity, particularly in the near backscattering direction.