The elastic-scattering intensity pattern from a single particle as a function of spherical coordinate angles and provides detailed information on the pattern’s morphology. By use of an ellipsoidal reflector and a CCD camera, a single-laser-shot intensity pattern from a large angular range ( from 90° to 168° and from 0° to 360°) was detected from a single aerosol (e.g., a Bacillus subtilis spore, a -diameter polystyrene latex sphere, or a cluster of either of these) flowing through the reflector’s focal volume at 5 m/s. Noticeable differences in the large-angle-range two-dimensional angular optical scattering (LATAOS) suggest that the LATAOS pattern could be useful in differentiating and classifying life-threatening aerosols from normal background aerosols.
© 2003 Optical Society of AmericaFull Article | PDF Article
Stephen Holler, Yongle Pan, Richard K. Chang, Jerold R. Bottiger, Steven C. Hill, and David B. Hillis
Opt. Lett. 23(18) 1489-1491 (1998)
Stephen Holler, Mario Surbek, Richard K. Chang, and Yong-Le Pan
Opt. Lett. 24(17) 1185-1187 (1999)
Paul H. Kaye, John E. Barton, Edwin Hirst, and James M. Clark
Appl. Opt. 39(21) 3738-3745 (2000)