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Vibrational dephasing effects and motional narrowing in the isotropic Raman Q branch of HD

✍ Scribed by Jeanine Bonamy; Daniel Robert

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 600 KB
Volume: 57
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(78)80343-1

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✦ Synopsis

Important motional narrowing has been previo%sIy experimentally observed by Dion and May in the isotropic Raman Q branch of pure gaseous HD in rhe fundamental vibrational band. A recent theoretical calculation of the present authors, in good agreement with these e.xperiments, has shown thar for pure HD only rotational mechanisms are effkient. In this paper, an infinite order treatment of t3e vibrational dephasing effects for HD perturbed by rare gases indicates an importar,t roIe of these last effects in the broadening of individual lines @articularly in the O-2 band) leading to a significant decrease of the motionaI narrowing in the resulting band profile at high density.

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