Lauter, A. ; Lee, K. S. ; Jung, K. H. ; Vatsa, R. K. ; Mittal, J. P. ; Volpp, H. -R. (2002) Absolute primary H atom quantum yield measurements in the 193.3 and 121.6 nm photodissociation of acetylene Chemical Physics Letters, 358 (3-4). pp. 314-319. ISSN 0009-2614
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00092...
Related URL: http://dx.doi.org/10.1016/S0009-2614(02)00625-5
Abstract
Absolute quantum yields for primary H atom formation (ΦH) were measured under collision-free conditions for the room-temperature gas-phase dissociation of acetylene (C2H2) after photoexcitation at 193.3 nm and at the H-atom Lyman-α wavelength (121.6 nm) by a pulsed laser photolysis (LP)-laser-induced fluorescence (LIF) 'pump-and-probe' technique. Using HCl and CH4 photolysis at 193.3 and 121.6 nm, respectively, as a reference, values of ΦH (193.3 nm)=0.94± 0.12 and ΦH (121.6 nm)=1.04± 0.16 were obtained which demonstrate that for both photolysis wavelengths the H+C2H product channel dominates the primary C2H2 photochemistry.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 25628 |
| Deposited On: | 04 Dec 2010 12:03 |
| Last Modified: | 07 Jun 2011 06:14 |
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