Confirmation of long‐range collision complex stabilization through the controlled relaxation of high internal excitation
| Autor: | D. E. Dawson, J. S. Joiner, H. Wang, J. L. Gole |
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| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | The Journal of Chemical Physics. 102:7437-7447 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.469056 |
| Popis: | A series of controlled multiple collision chemiluminescent and laser induced fluorescent studies confirm the long‐range collisional stabilization of high temperature group IIA dihalide complexes of some considerable spatial extent. The relaxation process demonstrates that the pseudocontinuum emissions observed under near single collision conditions [J. Chem. Phys. 102, 7425 (1995)] correspond to the overlap of a closely spaced, highly excited, rovibronic distribution. Controlled relaxation reveals the first vibrationally resolved electronic emission for the dihalides. The vibronic structure of the observed emission spectra correlates well with expectations based on the molecular electronic structure of the ground and low‐lying electronic states of the dihalides. The vibronically resolved emission from the Sr+IClHe→SrICl* and mixed halogen Sr+Cl2, Br2→HeSrCl2*+SrBr2* reactions provides strong support for the formation of a collisionally stabilized dihalide complex. These results, correlated with near singl... |
| Databáze: | OpenAIRE |
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