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Published September 1, 2017 | Supplemental Material
Journal Article Open

Rotational energy transfer in collisions between CO and Ar at temperatures from 293 to 30 K

Abstract

Experimental measurements and theoretical calculations are reported for rotational energy transfer in the Ar-CO system. Experiments were performed in cold uniform supersonic flows of Ar, using an infrared – vacuum ultraviolet double resonance technique to measure absolute state-to-state rate constants and total relaxation cross sections for rotational energy transfer within the (v = 2) vibrational state of CO in collision with Ar at temperatures from 30.5 to 293 K. Close-coupling calculations were also performed using a recent potential energy surface (Sumiyoshi and Endo, 2015). Very good agreement is obtained between measured and calculated values.

Additional Information

© 2017 Elsevier B.V. Received 21 March 2017, Accepted 19 May 2017, Available online 25 May 2017. The authors acknowledge financial support from the French Agence Nationale de la Recherche (ANR-HYDRIDES, contract ANR-12-BS05-0011-01). LM thanks Rennes Metropole for a mobility grant, and the Office for Science and Technology of the Embassy of France in the United States for a Chateaubriand Fellowship. DC thanks the Université de Rennes 1 for the award of a visiting professor position during the period that this work was carried out.

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