SENSITIZED PHOSPHORESCENCE - A GAS-PHASE MOLECULAR MIXING DIAGNOSTIC

The use of sensitized phosphorescence for visualization of gas phase f luid mixing and the requirements for quantitative imaging measurements are discussed. A model for estimating the molecular-mixing signal's d ependence on fluid composition is developed and candidate molecular re actants are considered within the framework of the model. Experiments based on sensitized phosphorescence from both an acetone-biacetyl syst em and a toluene-biacetyl system show good qualitative agreement with modeled results. It is concluded that quantitative measurements using sensitized phosphorescence are feasible.