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Improved inversion procedure for particle size distribution determination by photon correlation spectroscopy |
Applied Optics, Vol. 51, Issue 25, pp. 6220-6226 (2012)
http://dx.doi.org/10.1364/AO.51.006220
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Abstract
We propose a minimum variation of solution method to determine the optimal regularization parameter for singular value decomposition for obtaining the initial distribution for a Chahine iterative algorithm used to determine the particle size distribution from photon correlation spectroscopy data. We impose a nonnegativity constraint to make the initial distribution more realistic. The minimum variation of solution is a single constraint method and we show that a better regularization parameter may be obtained by increasing the discrimination between adjacent values. We developed the S-R curve method as a means of determining the modest iterative solution from the Chahine algorithm. The S-R curve method requires a smoothing operator. We have used simulated data to verify our new method and applied it to real data. Both simulated and experimental data show that the method works well and that the first derivative smoothing operator in the S-R curve gives the best results.
© 2012 Optical Society of America
OCIS Codes
(290.3200) Scattering : Inverse scattering
(290.3700) Scattering : Linewidth
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
(300.6170) Spectroscopy : Spectra
ToC Category:
Spectroscopy
History
Original Manuscript: May 7, 2012
Revised Manuscript: July 20, 2012
Manuscript Accepted: August 3, 2012
Published: August 30, 2012
Virtual Issues
Vol. 7, Iss. 11 Virtual Journal for Biomedical Optics
Citation
Shuai Mao, Jin Shen, John C. Thomas, Xinjun Zhu, Wei Liu, and Xianming Sun, "Improved inversion procedure for particle size distribution determination by photon correlation spectroscopy," Appl. Opt. 51, 6220-6226 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-51-25-6220
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