Fragmentation pathways of $\mathrm{H^+(H_2O)_2}$ after XUV photoionization
| Autor: | Lammich, L., Domesle, C., Hergenhahn, U., Pedersen, H. B., Wolf, A., Jordon-Thaden, B., Förstel, M., Heber, O., Klumpp, S., Martins, M., Guerassimova, N., Treusch, R., Ullrich, J. |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Physical review letters 105(25), 253003 (2010). doi:10.1103/PhysRevLett.105.253003 |
| DOI: | 10.3204/phppubdb-15322 |
| Popis: | Physical review letters 105(25), 253003 (2010). doi:10.1103/PhysRevLett.105.253003 Photofragmentation of the protonated water dimer $H^+(H_2O)_2$, a fundamental system both in aqueous solutions and gas-phase water clusters, has been studied at 13.8 nm using the Free Electron Laser FLASH in Hamburg. In a crossed-beam experiment using time-resolved, single-molecule fragment imaging, the two-body breakup into $H_2O^+ + H_3O^+$ was found as a prominent fragmentation channel with a kinetic energy release of up to 10 eV. This channel was observed with at least a similar yield as events with stronger fragmentation, producing protons together with neutral fragments and showing an absolute cross section of (0.5±0.2)×$10^{−18}$ $cm^2$. Published by APS, College Park, Md. |
| Databáze: | OpenAIRE |
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