TY - JOUR AB - A calibration technique is demonstrated which allows the determination of absolute atom concentrations in flames: two-photon laser-excited fluorescence signals from known atom concentrations generated in a discharge flow reactor are related to the fluorescence signals in a flame under identical excitation and detection conditions. With this method, absolute H atom profiles in several low-pressure hydrogen-oxygen flames have been obtained. For the same flame conditions, local temperature and absolute OH concentration profiles have been determined using laser-induced fluorescence (LIF). The experimental results are compared to the predictions of a one-dimensional flame model. The application of the new calibration technique to the atom detection in hydrocarbon flames is discussed. DA - 1988 DO - 10.1016/0010-2180(88)90104-6 LA - eng IS - 1 M2 - 41 PY - 1988 SN - 0010-2180 SP - 41-50 T2 - Combustion and Flame TI - Determination of absolute H atom concentrations in low-pressure flames by two-photon laser-excited fluorescence UR - https://nbn-resolving.org/urn:nbn:de:0070-bipr-14984 Y2 - 2024-11-21T22:17:44 ER -