IUPAC - dissymmetry of scattering (D01808)

dissymmetry of scattering

https://doi.org/10.1351/goldbook.D01808

The ratio of two Rayleigh ratios for different angles of observation, i.e.

z (θ_{1}, θ_{2}) = \frac{R (θ_{1})}{R (θ_{2})}

θ_{1} < θ_{2}

The angles must be specified; in light scattering it is customary to let

θ = 1 - θ_{1}

and, most frequently,

θ_{1} = 45^{\circ}

and

θ_{2} = 135^{\circ}

Source:
Purple Book, 1^st ed., p. 67 [Terms] [Book]

See also:
PAC, 1983, 55, 931. (Definitions, terminology and symbols in colloid and surface chemistry. Part 1.14: Light scattering (Provisional)) on page 932 [Terms] [Paper]

Citation: 'dissymmetry of scattering' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.D01808 RIS BibTex EndNote

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dissymmetry of scattering