Speed Dependence of Pressure Broadening in Molecular Rotational Spectra Using a Novel Technique
Anno: 1995
Autori: Buffa G., Carocci S., Dilieto A., Minguzzi P., Quochi F., Tarrini O., Tonelli M.
Affiliazione autori: UNIVERSITA’ PISA, DIPARTIMENTO FISICA, PIAZZA TORRICELLI 2,I-56126 PISA,ITALY.
Abstract: The line shape of a mm-wave rotational transition of CH3I in an excited vibrational state is observed for molecules in different velocity classes. The collisional self-broadening is measured as a function of relative speed by a novel experimental approach and clear evidence of speed dependence is observed. This result confirms the failure of an oversimplified model, which however is still widely used. We discuss it in detail, and we also show that the rotational temperature of the perturbing molecules has a
large influence on the pressure broadening coefficient.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 74 (17) Da Pagina: 3356 A: 3359
Parole chiavi: pressure broadening; velocity dependence; DOI: 10.1103/PhysRevLett.74.3356Citazioni: 13dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti 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