particle scattering function

Synonym: particle scattering factor
https://doi.org/10.1351/goldbook.P04429
The ratio of the intensity of radiation scattered at an @S05488@ \(\theta \) to the intensity of radiation scattered at an @A00346@ zero, i.e. \(P\left(\theta \right)\equiv \frac{R\left(\theta \right)}{R\left(0\right)}\). An alternative recommended symbol is \(P_{\theta }\). Synonymous with particle scattering factor.
Source:
Purple Book, 1st ed., p. 66 [Terms] [Book]