phase function

for scattering
symbol: $B({\lambda})$
https://doi.org/10.1351/goldbook.14031
Distribution function representing the fraction of photons scattered from any direction \(\mathit{\Omega}'\) into the direction \(\mathit{\Omega}\) under consideration in the radiative transfer equation (RTE). Dimension one.
Source:
PAC, 2011, 83, 931. (Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)) on page 963 [Terms] [Paper]