, Volume 62, Issue 6, pp 583-599

A detailed rate equation model for the simulation of energy transfer in OH laser-induced fluorescence

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Abstract

A rate equation model (the LASKIN program packet) has been developed for the detailed computation of energy transfer in Laser-Induced Fluorescence (LIF). Calculations of this type are necessary for analysis of the influence of energy transfer processes [e.g., electronic quenching and Rotational Energy Transfer (RET)] on the fluorescence signal. The model has been utilized to examine linear LIF in the OHA 2Σ+-X 2 Π (0, 0) band. Available data on quenching, RET and spontaneous emission rates for the (A, v′ = 0) state have been reviewed, and models for the state-specific RET and quenching rates have been developed. The accuracy of the calculations has been confirmed by comparison with experimental data, and the LASKIN program has been applied to the analysis of potential error sources in the widely applied two-line LIF temperature-measurement technique. Extensions of the model to the examination of saturated LIF, OHA–X (1, 0) and (3, 0) excitation and LIF of other species (e.g., O2 and NO) are discussed.