Model Analysis of Rotationally Inelastic Ar + H2O Scattering in an Electric Field
Abstract
We develop an analytic model of thermal state-to-state rotationally inelastic collisions of asymmetric-top molecules with closed-shell atoms in electric fields and apply it to the Ar-H2O collision system. The predicted cross sections as well as the steric asymmetry of the collisions show at fields up to 150 kV/cm characteristic field-dependent features which can be experimentally tested. Particularly suitable candidates for such tests are the 000 → 220 and 101 → 221 channels, arising from the relaxation of the field-free selection rules due to the hybridization of J states by the field. Averaging over the M' product channels is found to largely obliterate the orientation effects brought about by the field.
- Publication:
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Journal of Physical Chemistry A
- Pub Date:
- October 2009
- DOI:
- 10.1021/jp9051598
- arXiv:
- arXiv:0906.0443
- Bibcode:
- 2009JPCA..11315055L
- Keywords:
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- Physics - Chemical Physics;
- Physics - Atomic and Molecular Clusters;
- Physics - Atomic Physics
- E-Print:
- 22 pages, 1 table, 7 figures