Pure rotational R(0) and R(1) lines of CO in Ar baths: experimental broadening, shifting and mixing parameters in a wide pressure range <i>versus ab initio</i> calculations.

Tretyakov, M Yu; Serov, E A; Makarov, D S; Vilkov, I N; Golubiatnikov, G Yu; Galanina, T A; Koshelev, M A; Balashov, A A; Simonova, A A; Thibault, F

Pure rotational R(0) and R(1) lines of CO in Ar baths: experimental broadening, shifting and mixing parameters in a wide pressure range versus ab initio calculations.

Tretyakov, M Yu; Serov, E A; Makarov, D S; Vilkov, I N; Golubiatnikov, G Yu; Galanina, T A; Koshelev, M A; Balashov, A A; Simonova, A A; Thibault, F.

Afiliación

Tretyakov MY; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Serov EA; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Makarov DS; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Vilkov IN; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Golubiatnikov GY; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Galanina TA; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Koshelev MA; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Balashov AA; Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov str., Nizhny Novgorod, 603950, Russia. trt@ipfran.ru.
Simonova AA; V.E. Zuev Institute of Atmospheric Optics SB RAS, Tomsk, 634055, Russia.
Thibault F; Univ Rennes, CNRS, Institut de Physique de Rennes, UMR 6251, F-35000, Rennes, France.

Phys Chem Chem Phys ; 25(2): 1310-1330, 2023 Jan 04.

Article en En | MEDLINE | ID: mdl-36533685

RESUMEN

The results of a rigorous study of the two first pure rotational transitions of CO perturbed by Ar are presented. The experimental part is based on the use of three different spectrometers covering together the pressure range from 0.02 up to 1500 torr. The measurement results of collisional line shape parameters are supported by fully ab initio calculations, which are in remarkable agreement with retrieved data. A sub-percent uncertainty of line intensity measurements is achieved and the first firm evidence that the resonance spectrum of CO is observed on the continual pedestal is given. We analyze the results of our ab initio calculations on the basis of early analytical theories and demonstrate a good general applicability of the latter to the CO-Ar collisional system.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Reino Unido

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