Method for obtaining multicomponent diffusion coefficients directly from Raleigh and Gouy fring position data
Journal Article
·
· J. Phys. Chem.; (United States)
A nonlinear least-squares (NLLS) method for analyzing three-component Rayleigh fringe position data for diffusion, described briefly in previous papers, is extended here to four-component data. By a simple transformation of equations for the Gouy method, an analogous NLLS procedure can be applied directly to three- and four-component Gouy fringe position data. The only complication is that the Gouy NLLS is subjected to a condition equation. Results are given for the free-diffusion case, but the procedure can be extended to other boundary conditions.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6180934
- Journal Information:
- J. Phys. Chem.; (United States), Vol. 92:14
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DIFFUSION
DATA ANALYSIS
DIFFRACTION
LEAST SQUARE FIT
MATHEMATICAL MODELS
THEORETICAL DATA
COHERENT SCATTERING
DATA
INFORMATION
MAXIMUM-LIKELIHOOD FIT
NUMERICAL DATA
NUMERICAL SOLUTION
SCATTERING
400201* - Chemical & Physicochemical Properties
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DIFFUSION
DATA ANALYSIS
DIFFRACTION
LEAST SQUARE FIT
MATHEMATICAL MODELS
THEORETICAL DATA
COHERENT SCATTERING
DATA
INFORMATION
MAXIMUM-LIKELIHOOD FIT
NUMERICAL DATA
NUMERICAL SOLUTION
SCATTERING
400201* - Chemical & Physicochemical Properties