Model analysis of rotationally inelastic Ar + H2O scattering in an electric field Journal Article


Author(s): Lemeshko, Mikhail P; Friedrich, Břetislav
Article Title: Model analysis of rotationally inelastic Ar + H2O scattering in an electric field
Affiliation
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.
Keywords: Rotationally inelastic collision; Closed shell atoms; Collision systems; Cross section; Model analysis; Orientation effect; Product channel; Selection Rules; Steric asymmetry; Thermal state
Journal Title: Journal of Physical Chemistry A
Volume: 113
Issue 52
ISSN: 1520-5215
Publisher: American Chemical Society  
Date Published: 2009-12-31
Start Page: 15055
End Page: 15063
URL:
DOI: 10.1021/jp9051598
Open access: yes (repository)