| Autor: |
Tuna, T., Chabot, M., Pino, T., Désesquelles, P., LePadellec, A., Martinet, G., Barat, M., Lucas, B., Mezdari, F., Montagnon, L., Van-Oanh, N. T., Lavergne, L., Lachaize, A., Carpentier, Y., Béroff, K. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 3/28/2008, Vol. 128 Issue 12, p124312, 11p, 11 Charts, 7 Graphs |
| Abstrakt: |
We have measured fragmentation branching ratios of neutral CnH and CnH+ cations produced in high velocity (4.5 a.u) collisions between incident CnH+ cations and helium atoms. Electron capture gives rise to excited neutral species CnH and electronic excitation to excited cations CnH+. Thanks to a dedicated setup, based on coincident detection of all fragments, the dissociations of the neutral and cationic parents were recorded separately and in a complete way. For the fragmentation of CnH, the H-loss channel is found to be dominant, as already observed by other authors. By contrast, the H-loss and C-loss channels equally dominate the two-fragment break up of CnH+ species. For these cations, we provide the first fragmentation data (n>2). Results are also discussed in the context of astrochemistry. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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