Fig. 7: Temporal profiles of the concentrations of HO2 and OH radicals. | Communications Chemistry

Fig. 7: Temporal profiles of the concentrations of HO2 and OH radicals.

From: Simultaneous determination of transient free radicals and reaction kinetics by high-resolution time-resolved dual-comb spectroscopy

Fig. 7

a A time trace of the HO2 line at 3422.102 cm‒1 (black) was recorded with a temporal resolution of 50 μs upon the laser photolysis of a flowing mixture of Cl2/CH3OH/O2/N2 (1/0.45/25.7/7.18, 8.33 Torr, 296 K) at 351 nm. b Time traces of the HO2 line at 3422.102 cm‒1 (blue) and the OH line at 3421.932 cm‒1 (red) were measured with a temporal resolution of 50 μs upon the irradiation of the flowing mixture with [NO]0 = 3.06 × 1014 molecule cm−3. The thick solid lines represent profiles fitted using the kinetic model. The insert in b depicts the temporal profiles from −0.4 to 5 ms.

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