Anisotropy factor

Definition: The anisotropy factor,g, is the average cosine of the scattering angle for a typical scattering event, i.e., g=<cos theta>. For example, if each scatter tends to scatter incident photons into the forward direction, then the anisotropy factor will be close to unity; if the scattering tends to be isotropic, then the factor will be close to zero. The anisotropy factor can also define single scattering events.Definition: The anisotropy factor,g, is the average cosine of the scattering angle for a typical scattering event, i.e., g=<cos theta>. For example, if each scatter tends to scatter incident photons into the forward direction, then the anisotropy factor will be close to unity; if the scattering tends to be isotropic, then the factor will be close to zero. The anisotropy factor can also define single scattering events.

Alternative definition:

Synonym: Asymmetry factor

References: https://doi.org/10.1117/3.2624517

Related terms: Scattering phase function, Reduced scattering coefficient  

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