Advances in Photochemistry, Volume 18 - download pdf or read online

By David H. Volman, George S. Hammond, Douglas C. Neckers

ISBN-10: 0471591335

ISBN-13: 9780471591337

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

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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 [71].

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).

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Advances in Photochemistry, Volume 18 by David H. Volman, George S. Hammond, Douglas C. Neckers


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