Polarized fluorescence decay surface for a mixture of non-interacting species in solution

A treatment for analyzing the excitation and emission multiwavelength polarized fluorescence decay surfaces for a mixture of non-interacting species in solution, is discussed. The polarized fluorescence decays are parameterized in terms of species-associated total fluorescence decay parameters, diffusion tensors and the polar angles defining the directions of absorption and emission dipole moments. The case of excitation of the species to higher excited states is also considered.