| Autor: |
Harris, Robert A., Wedlock, Michael R., Butler, Laurie J., Freed, Karl F. |
| Předmět: |
|
| Zdroj: |
Journal of Chemical Physics; 2/15/1992, Vol. 96 Issue 4, p2437, 7p |
| Abstrakt: |
This paper extends the McClain formulation of two-photon absorption to show what observables can be independently determined in an emission experiment for which incident and scattered photon polarizations are resolved. Interelectronic state coupling contributions and quantum interference can be extracted from the polarized emission spectrum by determining the three linearly independent contributions to the scattering intensity. This enhances the value of polarized emission spectroscopy as a tool for understanding transitions between coupled electronic states that occur during dissociation dynamics. We demonstrate that the three linearly independent contributions to the polarized emission spectrum can be determined by performing three polarization experiments, at least one of which must involve circularly polarized light. Furthermore, the three polarization experiments must be performed at a scattering angle other than π/2. We also present sample calculations on a model of the methyl iodide system which serve as an illustration of the general theory and demonstrate the sensitivity of this technique to the details of the potential-energy surfaces. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
