Gstir, B.; Hanel, G.; Fedor, J.; Probst, M.; Scheier, P.; Mason, N.J. and Mrk, T.D
(2002).
| URL: | http://www.ingentaconnect.com/content/iop/jphysb/2... |
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Abstract
Electron impact ionization cross sections measured close to threshold are reported for the newly discovered greenhouse gas SF5CF3. No stable parent ion is detected but several cations are detected and their appearance energies (AE) have been measured. The AE (CF3+/SF5CF3) 12.87?0.10 eV is in excellent agreement with a recently reported value derived from a photoelectron-photoion coincidence experiment. Other ion thresholds are: AE (CF+/SF5CF3) 24.44?0.10 eV, AE (CF2+/SF5CF3) 17.80?0.50 eV; AE (SF+/SF5CF3) 12.66?0.20 eV; AE (SF3+/SF5CF3) 14.48?0.10 eV; AE (SF5+/SF5CF3) 13.16?0.60 eV. Two thresholds are suggested for AE (SF4+/SF5CF3) 16.10?0.30 and 12.10?0.30 eV. A tentative assignment of an AE for SF2+/SF5CF3 of 15.6?1.0 is also given. These results confirm that SF5CF3 is unlikely to be photolysed in the lower stratosphere and therefore will have a long lifetime against solar photodissociation.
| Item Type: | Journal Article |
|---|---|
| ISSN: | 0953-4075 |
| Extra Information: | Some of the symbols may not have transferred correctly into this bibliographical record. |
| Academic Unit/Department: | Science > Physical Sciences |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) eSTEeM |
| Item ID: | 4459 |
| Depositing User: | Users 6827 not found. |
| Date Deposited: | 06 Jul 2006 |
| Last Modified: | 05 Mar 2014 10:29 |
| URI: | http://oro.open.ac.uk/id/eprint/4459 |
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