Optics: measuring and testing – For size of particles – By particle light scattering
Patent
1998-09-21
2000-08-08
Kim, Robert H.
Optics: measuring and testing
For size of particles
By particle light scattering
356338, 356343, G01N 1502
Patent
active
061009768
ABSTRACT:
The instant invention provides a method and apparatus for use in laser induced dynamic light scattering which attenuates the multiple scattering component in favor of the single scattering component. The preferred apparatus utilizes two light detectors that are spatially and/or angularly separated and which simultaneously record the speckle pattern from a single sample. The recorded patterns from the two detectors are then cross correlated in time to produce one point on a composite single/multiple scattering function curve. By collecting and analyzing cross correlation measurements that have been taken at a plurality of different spatial/angular positions, the signal representative of single scattering may be differentiated from the signal representative of multiple scattering, and a near optimum detector separation angle for use in taking future measurements may be determined.
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Kim Robert H.
Lauchman Layla
The Board of Regents for Oklahoma State University
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