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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.
Keywords : Molecular physics
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01578397
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Submitted on : Monday, September 11, 2017 - 3:14:47 PM
Last modification on : Wednesday, September 23, 2020 - 4:17:17 PM

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Laura A. Mertens, Hamza Labiad, Otoniel Denis-Alpizar, Martin Fournier, David Carty, et al.. Rotational energy transfer in collisions between CO and Ar at temperatures from 293 to 30 K. Chemical Physics Letters, Elsevier, 2017, 683, pp.521-528. ⟨10.1016/j.cplett.2017.05.052⟩. ⟨hal-01578397⟩

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