# CALCULATION OF ROTATIONAL STATE-TO-STATE OZONE RELAXATION RAISES FOR $O_{3}-N_{2}, O_{3}-O_{2}$ AND $O_{3}-O_{3}$ COLLISIONS AND MODEL1ZATION OK THE $(100)\leftrightarrow (001)$ CORIOLIS-ASSISTED INTERMODE TRANSFER

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 Title: CALCULATION OF ROTATIONAL STATE-TO-STATE OZONE RELAXATION RAISES FOR $O_{3}-N_{2}, O_{3}-O_{2}$ AND $O_{3}-O_{3}$ COLLISIONS AND MODEL1ZATION OK THE $(100)\leftrightarrow (001)$ CORIOLIS-ASSISTED INTERMODE TRANSFER Creators: Menard-Bourcin, F.; Boursier, C.; Boulet, C.; Doyennette, L.; Menard, J.; Flaud, J.- M. Issue Date: 1994 Publisher: Ohio State University Abstract: Rotational state-to-state rate constants have been calculated for $O_{3}-M$ collisions $(M=O_{3}, N_{2}, O_{2})$ by a semi-classical method based on multipolar and atom-atom potentials. Calculations lead to a strong Propensity for first-order quadrupolar transitions when the perturber is diatomic and to a propensity for both first-order quardrupolar-and dipolar-type for self relaxation. The $(100) \leftrightarrow (001)$ Coriolis-assisted intermode transfer, observed when pumping $O_{3}$ molecules in a (100) rotational state and monitoring the ensuring population increase in a (001) rotational state, is too fast to be a pure near-resonant vibrational-vibrational energy transfer but results mainly from successive rotational energy transfers within the (100,001) dyad. We have then developed a kinetic model describing, by means of the calculated state-to-state rates, the rotational energy transfer within a large set of (100,001) rotational states. Such a kinetic model simulates as well pure rotational energy transfer as rovibrational transfers. It was applied to the available experimental data. Description: Author Institution: Laboratoire de Physique Molecularie et Applications, CNRS, Universit\'e P. et M. Curie URI: http://hdl.handle.net/1811/13059 Other Identifiers: 1994-ME-14