O (1 D 2) orbital orientation in the ultraviolet photodissociation of ozone

SK Lee, D Townsend, OS Vasyutinskii… - Physical Chemistry …, 2005 - pubs.rsc.org
Physical Chemistry Chemical Physics, 2005pubs.rsc.org
We present the absolute velocity-dependent orbital orientation for O (1D2) atoms produced
from the photodissociation of ozone in the 248–285 nm region obtained using the DC slice
imaging method. The results are analyzed in terms of laboratory frame anisotropy
parameters describing distinct excitation and dissociation mechanisms possessing
characteristic angular distributions. The results show negligible orbital orientation produced
in dissociation by circularly polarized light, but strong recoil speed-dependent orientation …
We present the absolute velocity-dependent orbital orientation for O(1D2) atoms produced from the photodissociation of ozone in the 248–285 nm region obtained using the DC slice imaging method. The results are analyzed in terms of laboratory frame anisotropy parameters describing distinct excitation and dissociation mechanisms possessing characteristic angular distributions. The results show negligible orbital orientation produced in dissociation by circularly polarized light, but strong recoil speed-dependent orientation following photolysis by linearly polarized light at all wavelengths studied. The origin of this polarization is ascribed to nonadiabatic transitions at avoided crossings and at long range.
The Royal Society of Chemistry
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