Notice of RetractionAnalysis of factors effecting the accuracy in determining particle size distribution from spectral extinction measurements

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Using spectral extinction technique to determine the particle size distribution has advantages of simplicity in measurement principle and convenience in optical arrangement. However, the ill-posedness of Fredholm integral equation of the first kind makes the inversion results of particle size distribution are sensitive to the argument parameters in the integral equation. Thus, several important factors effecting the inversion accuracy in the dependent model are investigated. Numerical simulations and experimental results indicate that a fairly reasonable representation of particle size distribution can be obtained when the object function and the number of wavelengths, as well as the particle size subintervals are considered reasonably.