DIAGNOSTICS AND MODELING OF STRAINED FUEL-RICH ACETYLENE OXYGEN FLAMES USED FOR DIAMOND DEPOSITION/

Low pressure (35 torr) strained acetylene/oxygen flames similar to tho se used for diamond chemical vapor deposition are studied using laser- induced fluorescence (LIF) and mass spectrometry. Relative OH concentr ation and OH rotational temperature profiles are obtained by LIF, whil e absolute mole fractions of C2H2, CH4, H-2, and CO are measured at th e substrate by mass spectrometry. The results of the diagnostics are c ompared with the predictions of a one-dimensional strained flame code. The agreement between model prediction and experiment is generally go od and usually within experimental uncertainties.