Submicrometer Particle Sizing by Photon Correlation Spectroscopy: Use of Multiple-Angle Detection

Effect of scattering angle error on particle size determination by multiangle dynamic light scattering

“…A number of different approaches have been investigated for data analysis of the MDLS data. These include the CONTIN algorithm [4], the singular value decomposition method [5], the regularization method [6], the neural network algorithm [7], the Bayesian algorithm [8], and the improved Chahine algorithm [9].…”

Static and dynamic light scattering by aerosols in a controlled environment

“…Vaidya et al (1987) compared various methods available for determining macromolecular polydispersity from DLS data with their own GEX function fit method. Bott (1987) has shown that weight distributions from singleangle PCS measurements can have huge errors and suggested that complementary information obtained by measurement at an additional angle allow a good measure of the weight-averaged size distribution. Bertero and Pike (1983) and Bertero et al (1989) have also successfully used PCS data to extract polydispersity information.…”

Techniques to Characterize the Thermal-Oxidation Stability of Jet Fuels and the Effects of Additives

“…where the index, s, denotes the size of the particles and X(s) is the particle-size distribution, which yields the relative proportion of scattering from particles of size s. The constants a and b are the lower and upper limits of particle size, respectively. This integral equation must be numerically inverted to extract X(s) from the measured autocorrelation function (Bott, 1987).…”

“…Exposure of fuels to high temperature results in the formation of particulates and deposits that clog valves and filters and degrade injection-nozzle performance. Several studies have shown that the auto-oxidation of hydrocarbons is the main reaction leading to formation of Soluble products and deposits (Katta and Roquemore, 1992;ICrazinski et al, 1990;Anderson et al, 1994;Jones et al, 1995;Jones and Balster, 1995;Chin and Katta, 1995;Hazlett, 1991). Efforts to develop highly stable jet fuels would benefit from an understanding of the relationship among particle-size growth rate, rate of mass deposition on a surface, and dissolvedoxygen concentration resulting from thermally induced degradation of jet fuel.…”