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| Titel: |
Vibrational relaxation in bromochloromethane |
| Auteur: |
Chen, S. J. H. Rodriguez, A. A. Schwartz, M. |
| Verschenen in: |
Molecular physics |
| Paginering: | Jaargang 56 (1985) nr. 5 pagina's 1157-1164 |
| Jaar: |
1985-12-10 |
| Inhoud: |
Polarized and depolarized Raman spectra were measured for the symmetric stretching modes of bromochloromethane as a function of temperature in the liquid phase. Second moments of the isotropic spectra for all three vibrations are far greater in magnitude than are values obtained for the equivalent vibrations in dichloro and dibromomethane. Similarly, vibrational (isotropic) relaxation times in CH2BrCl are significantly shorter than in CH2Cl2 or CH2Br2. The isolated binary collision model of homogeneous dephasing could not explain many of the trends in the experimental results. Application of the Kubo model revealed that derived modulation times are close to equal for equivalent vibrations in the various dihalomethanes. Thus, the more efficient relaxation of the A1 modes in CH2BrCl can be attributed almost entirely to the broader mean squared frequency perturbation of the vibrations in this molecule. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 17 van 17 gevonden artikelen
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