title: Simultaneous forward- and backward-hemisphere elastic-light-scattering patterns of respirable-size aerosols.
abstract: Two-dimensional angular optical scattering (TAOS) patterns of aerosols are measured simultaneously from the forward hemisphere 15 degrees < theta < 90 degrees as well as the backward hemisphere 90 degrees < theta < 165 degrees (detecting 63% of the 4pi sr of scattered light) by using an ellipsoidal reflector and an intensified CCD detector. TAOS patterns were obtained from polystyrene-latex spheres (individuals and aggregates) and from single Bacillus subtilis spores. These information-rich patterns, measured with a single laser pulse for individual particles on the fly, suggest that forward-TAOS and backward-TAOS measurements may be used for rapid classification of single aerosol particles.
authors.affiliation: Department of Applied Physics and Center for Laser Diagnostics, Yale University, New Haven, Connecticut 06520-8284, USA. gustavo.fernandes@yale.edu
authors.forename: Gustavo E
authors.initials: GE
authors.lastname: Fernandes
authors.forename: Yong-Le
authors.initials: YL
authors.lastname: Pan
authors.forename: Richard K
authors.initials: RK
authors.lastname: Chang
authors.forename: Kevin
authors.initials: K
authors.lastname: Aptowicz
authors.forename: Ronald G
authors.initials: RG
authors.lastname: Pinnick