Photoionization and photofragmentation of gaseous toluene using 80-fs, 800-nm laser pulses
| Autor: | Bernd Witzel, Cornelis Uiterwaal, Astrid M. Müller, Jochen Wanner, Karl L. Kompa |
|---|---|
| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | The Journal of Chemical Physics. 112:9289-9300 |
| ISSN: | 1089-7690 0021-9606 |
| Popis: | is found to be effectively proportional to the sixth power of the peak intensity. This is shown to be in good agreement with a multiple lowest-order perturbation multiphoton ionization model which takes into account successive channel closing for increasing peak intensities and orders up to 11 inclusive. On the assumption that the excess energy acquired by the toluene cation as a result of the interaction with the electromagnetic field is of the order of the ponderomotive energy for the intensity prevailing at the moment of the ionization, the internal energy distribution of the toluene cations created that is brought about by this multiple-order multiphoton ionization model is calculated. This internal energy distribution is in perfect agreement with the measured C 7H 7 yield, if the rate-energy curve for the fragmentation of excited toluene cations as given by Golovin et al. @Sov. J. Chem. Phys. 2, 632 ~1985!# is moderately reduced by a factor of 4.5. © 2000 American Institute of Physics. @S0021-9606~00!00121-5# |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|