Applied Physics B

, Volume 62, Issue 6, pp 575–581

A direct method of particle sizing based on the statistical processing of scattered photons from particles executing Brownian motion

  • H. S. Dhadwal
  • K. Suh
  • D. A. Ross
Article

DOI: 10.1007/BF01081696

Cite this article as:
Dhadwal, H.S., Suh, K. & Ross, D.A. Appl. Phys. B (1996) 62: 575. doi:10.1007/BF01081696

Abstract

A direct method of determining the mean diameter of particles executing Brownian motion is presented. The temporal coherence of the scattered field from submicroscopic particles illuminated by laser light is a function of both the integration time and the particle diameter. The temporal degree of coherence of the time-averaged scattered intensity decreases as the integration time increases. Statistical processing of the scattered photons leads to a method of particle sizing (average diameter), which circumvents the need for digital autocor-relation or power spectral estimation.

PACS

07.6042.80

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • H. S. Dhadwal
    • 1
  • K. Suh
    • 1
  • D. A. Ross
    • 2
  1. 1.Department of Electrical EngineeringState University of New YorkStony BrookUSA
  2. 2.Department of Electrical EngineeringUniversity of Colorado at DenverDenverUSA