N2, O2, H-2, Ar and He broadening in the NU(1) band of NH3
Anno: 1993
Autori: Pine A.S., Markov V.N., Buffa G., Tarrini O.
Affiliazione autori: Molecular Physics Division, National Institute of Standards and Technology, Githersburg MD, USA; Dipartimento di fisica dell\’università di Pisa
Abstract: N2-, O2-, H-2-, Ar- and He-broadening coefficients and pressure shifts have been measured for Q- and R-branch transitions in the nu1 fundamental band of ammonia using a difference-frequency laser spectrometer. The J-K dependence of the broadening coefficients is much smaller than previously observed for self broadening of NH3. Semiclassical line broadening calculations for N2 broadening are in reasonable quantitative agreement with the data, but they also exaggerate the J-K dependence. Dicke narrowing is observed as strong deviations from Voigt profiles at intermediate pressures and provides estimates for optical diffusion constants which correlate well with the mass diffusion constants for NH3 in the various buffer gases.
Giornale/Rivista: JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
Volume: 50 Da Pagina: 337 A: 348
Parole chiavi: pressure broadening; ammonia; DOI: 10.1016/0022-4073(93)90069-TCitazioni: 57dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
