By David H. Volman, George S. Hammond, Douglas C. Neckers
A part of a continuous sequence which explores the frontiers of photochemical examine, this quantity comprises reviews by way of specialists within the box who seriously research current facts.
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Extra info for Advances in Photochemistry, Volume 18
4 mTorr, total pressure 4 Torr, 3 p s time resolution. (a) Data were taken over 200 laser shots at 68 J cm-'. (b)Data for 100 laser shots at 59 J cm-'. Note the different timescales for the two sets of traces. Reproduced with permission from Ref. 82. 52 G . HANCOCK AND D. E. HEARD evolution of 50 excitation cycles was recorded and averaged for each interferometric mirror position (or between adjacent sampling positions for a quasi-SS scan). The strongest emission was from NO(u’ = 1-10), generated from the reactions of N(,D) and N(,P) with 0,.
The strongest emission was from NO(u’ = 1-10), generated from the reactions of N(,D) and N(,P) with 0,. The N,O (0,0,1+O,O,O) emission around 2200cm-’ was thought to be due to V-V exchange with excited N, or N,O, or to a three-body process. Time-resolved spectra of the NO(Au’ = - 1) emissions were recorded at 100-ps intervals during and after the beam pulse, with a resolution of 10cm-’. No rotational structure was resolved, and relative vibrational populations as a function of time were obtained from fits to the spectra .
The significant feature, common to all NCO formation methods, is that an initially broad distribution between 1900 and 2300 cm-' relaxes collisionally to produce N 2 0 (001) as the dominant emitting species. Both CO, and CO are also seen but the former, despite having a larger TIME-RESOLVED FTIR EMISSION STUDIES 47 N,0(001-000) 1800 2300 2800 Wavenumberlcm-1 Figure 21. Emission in the 1800-2800cm-' region following the IRMPD of CH,F, (25 mTorr) in the presence of NO (100 mTorr) and Ar (10 Torr).
Advances in Photochemistry, Volume 18 by David H. Volman, George S. Hammond, Douglas C. Neckers