The H atom quantum yield ~b H and the average product translational energy were determined for the HNCO ---, H(2S) + NCO(X 21-I) photodissociation channel at room temperature for a photolysis wavelength of 193 nm. HNCO was photolyzed using an ArF excimer laser and nascent H atoms were detected by va
Ion imaging of the photodissociation of HNCO near 217 nm
โ Scribed by Masahiro Kawasaki; Yoshihiro Sato; Kunihiro Suto; Yutaka Matsumi; Steven H.S. Wilson
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 637 KB
- Volume
- 251
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The photofragment CO produced in the photodissociation of HNCO at 217 nm shows an image that corresiponds to a perpendicular transition, HNCO(I 'A" + 2 'A'). The rotational energy distribution suggests that the dissociation occurs impulsively from the upper 1 'A" potential surface.
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Excitation functions for Br-and Br+ formation from jet-cooled Br,, in the region 120-I 14 nm (i.e. from threshold to above the ionisation limit of Br2). are reported. The mechanism for ion-pair formation is discussed in terms of homogeneous couphag between the 8pn Rydberg State and the D(O: ) ion-pa