Project Title:
Quadrupole Traps for Optical Characterization of Aerosols
08.04-0003
911243
Quadrupole Traps for Optical Characterization of Aerosols
Physical Sciences, Inc.
20 New England Business Center
Andover
MA
01810
Karen
Carleton
508-689-0003
LaRC
NAS1-19536
140
08.04-0003
911243
Abstract:
Quadrupole Traps for Optical Characterization of Aerosols
A quadrupole trap coupled with optical diagnostics for in situ characterization of
size distributions, composition, and optical properties of aerosols will be developed
as a small, compact flight instrument. Particle mass will be measured from the quadrupole-trap
balance voltage and correlated with particle size determined from the Mie scattering-polarization
ratio. The trap design will include optical access to implement a variety of particle
diagnostics including angular-and-polarization dependent Mie scattering for optical
properties and Raman scattering for particle composition.
A quadrupole trap with optical diagnostics could be developed as a flight instrument
for in situ aerosol characterization, as well as a particle monitor for pollution
control.
quadrupole, trap, aerosol, Mie scattering, Raman scattering, laser