Optical Characterization of Coated Soot Aerosols or "Flames and Laser"

Sandia National Laboratories
2005 – 2006

    The optical properties of coated soot aerosols produce the greatest uncertainty in climate change models.  This project aims to measure the scattering and absorption of light by sub-micron-sized soot particles similar to those produced in diesel exhaust.  Total absorption and scattering cross sections of 635 nm laser light are measured using cavity-ringdown and angle-resolved scattering techniques.  Soot particles are created in situ by partially combusting ethylene and coated with a volatile organic compound.

    The Physics Clinic presents opportunities for students to work on practical projects relevant to industrial work. Students work on teams of 3–5 on a sponsored research or development project.