J. Phys. II France
Volume 6, Numéro 5, May 1996
Page(s) 593 - 603
DOI: 10.1051/jp2:1996200
J. Phys. II France 6 (1996) 593-603

Calculation of $(100)\leftrightarrow(001)$ Coriolis-Assisted Transfer Rates for O 3 - N 2 and O 3 - O 3 Collisions

C. Boursier, F. Ménard-Bourcin, L. Doyennette, J. Ménard and C. Boulet

Laboratoire de Physique Moléculaire et Applications, CNRS, Université Pierre et Marie Curie, Tour 13, Case 76, 4 Place Jussieu, 75252 Paris Cedex 05, France

(Received 21 November 1995, accepted 6 February 1996)

A kinetic model, taking into account the rovibrational state-to-state energy transfers within the first vibrational dyad of ozone, has been applied to describe the (100) $\longleftrightarrow$ (001) Coriolis-assisted intermode transfer occurring upon O 3 - N 2 and O 3 - O 3 collisions. The state-to-state rate coefficients have been calculated by a semi-classical method based on multipolar and atom-atom interaction potentials. The temporal evolutions of the populations of the $\vert vJK_{\rm a}K_{\rm c}>$ ( v=(100) or (001)) levels, calculated by our model, show a strong dependence on the value of the $K_{\rm a}$ number. The predicted temperature dependence of the energy transfers from (100) levels towards (001) levels, after pumping into a (100) level, agrees well with the available results obtained from double- resonance experiments in the 200-300 K temperature range.

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