Rayleigh-Gans-Debye

G. H. Meeten, Conservative dichroism in the Rayleigh-Gans-Debye approximation, J. Coll. Inter. Sci., 84,235 (1981). 

For small colloidal particles (a < 1 /mi), with spherically symmetric distribution of scattering material inside its volume, the field amplitude is given by the Rayleigh-Gans-Debye approximation [38]... 

Static light scattering (SLS) was performed with a Fica-50 photometer using vertically polarized light (A = 436 and 546 nm). A correction was made for scattering of the solvent. The Rayleigh-Gans-Debye... 

Equations 8.27 and 8.28 are not satisfied if al k = 0.3 and n - 1 = 0.3, but these values lead to a value of 0.09 for the left-hand side in Equation 8.34, whieh is satisfied. Thus the Rayleigh-Gans-Debye result can be extended to systems not covered by Rayleigh scattering alone. Further, for n very close to one, much larger values of a, the length scale characterizing the dispersed phase, can be tolerated. 

Macromolecular solutions and colloidal suspensions show light dispersion phenomena, which is found to be essentially dependent on the molecular weight of the dispersing substance, according to the Rayleigh-Gans-Debye approximation (Striegel et al. 2009) ... 

TABLE 8.1 Relations for R, and the Intramolecular Interference Function P(,q,0) for Several Model Structures" (Rayleigh-Gans-Debye Regime)... 

Cellulosic nanowhiskers. Theory and application of light scattering from polydisperse spheroids in the Rayleigh— Gans-Debye regime. Biomacromolecules,... 

For larger particles, explicit Rayleigh-Gans-Debye (RGD) expression, for P(Q) are known for several different particle shapes and are available in the literature. These RGD functions are valid if the condition... 

If scattering from the medium is sufficiently weak, one is justified in applying the so-called Rayleigh-Gans-Debye approximation. This simply says that the field inside the scatterer may be approximated to... 

Al-Chalabi, S. A. M., Jones, A. R., Light Scattering by Irregular Particles in the Rayleigh-Gans-Debye Approximation, J. FAys. D, 1995,28, 1304-1308. 

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