Vibrational deactivation probabiljties are caiculated for N2. Olr C12, I2 in collision with smooth surfaces, using the recent DWES model. It is found that molecular rotation dominates over translation in receiving the vibrational energy I+ leased. even for the heaviest diatomics.
Rotational-translattonal energy exchange in molecule-surface collisions
β Scribed by D.E. Fitz; A.O. Bawagan; L.H. Beard; D.J. Kouri; R.B. Gerber
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 423 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Reported are calculations of rotational energy transfer in collisions of Cl* molecules with a rigid, smooth surface, using both sudden approximations and quasi-classical trajectories. High probabilities are found for very large Ai transitions compared to corresponding gas-phase collisions: thus molecular collisions with walls can be extremely efficient in producing rotational transitions.
π SIMILAR VOLUMES
Classical tujectory calculations for a model of 12 scattering from a surface show that in hi~h-xtergy collisions the amount of translational energy trancferred to rotation geatlv exceeds the amount transferred to vibration\_ The sudden approximation is used to qualitative& interpret the results.
Quantum close-coupling c3Icuhtions are presented which verify that the rotational polartriution observed in recent experiments on NO-Ag(I 11) scattering is due primarily to rzv conservation. However a dramatic dependena of rotational transitions on initial q in some surfwe collisions is also indicat
The multiple collision (MC) effect in molecule-swface collisions is analyzed using a previously developed two-dimensional quantum hard ellipsoid model. The influence of the MC effecr on the rotatior.al transition probability distribution is studied. The major role of closed channels in the descripti