Problems of Channel Correlation and Statistical Bias in Photon-Correlation Spectroscopy

Authors

Richard C. Haskell, Harvey Mudd CollegeFollow
Gary L. Pisciotta

Document Type

Article

Department

Physics (HMC)

Publication Date

4-1985

Abstract

Correlation between channels of the normalized photocount-rate correlation function g⁽²⁾(τ) becomes significant at high count rates and leads to a number of data-analysis problems. We derive an expression for channel correlation that is valid for a detector area of arbitrary extent and compare the theoretical predictions with measured values. A data-analysis procedure is demonstrated that employs the theoretical expression for channel correlation and provides a rigorous test of an assumed fitting function. The procedure facilitates the use of the cumulant method in determining the polydispersity of scatterers. An expression for the statistical bias of g⁽²⁾(τ) is also derived and compared with measured values.

Comments

First published by Journal of the Optical Society of America B, vol. 2, no. 5 (May 1985), by the Optical Society of America.

Rights Information

©1985 Optical Society of America

Terms of Use & License Information

Terms of Use for work posted in Scholarship@Claremont.

Recommended Citation

Haskell, RC, Pisciotta, GL. Problems of channel correlation and statistical bias in photon-correlation spectroscopy. J Opt Soc Am B. 1985;2(5): 714-720.