Measurement of bipolar moments for photofragment angular correlations in ion imaging experiments
| Autor: | Joseph I. Cline, David Chandler, Robert D. Hinchliffe, Radoslaw Uberna, Vilen K. Nestorov, K. Thomas Lorenz |
|---|---|
| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | The Journal of Chemical Physics. 115:7881-7891 |
| ISSN: | 1089-7690 0021-9606 |
| Popis: | A general numerical method is given to extract angular correlations from photodissociation experiments with ion imaging detection. The angular correlations among the transition dipole moment of the parent molecule, μ, the photoproduct recoil velocity, v, and its angular momentum, j, are parametrized analytically using the semiclassical bipolar moment scheme due to Dixon. The method is a forward-convolution scheme which allows quantitative extraction of all measurable bipolar moments and can be applied in experiments with both linearly and circularly polarized probe light. It avoids the cylindrical symmetry limitations of the inverse Abel transform method, traditionally used for extracting photoproduct recoil anisotropy and speed distribution from imaging data. The method presented here also takes into account the possibility of multiple photodissociation channels. The features of the method are illustrated in a two-color 1+1′ REMPI-ion imaging study of the NO photoproduct trajectories resulting from the 6... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|