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Measurments of collisional line widths in the stimulated Raman Q ‐branch of the ν 1 band of silane
Author(s) -
Millot G.,
Boutahar A.,
Lavorel B.,
Wenger C.,
SaintLoup R.,
Berger H.
Publication year - 1990
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250211207
Subject(s) - raman spectroscopy , line (geometry) , chemistry , spectral line , atomic physics , quantum number , torr , analytical chemistry (journal) , silane , mixing (physics) , physics , optics , geometry , mathematics , chromatography , astronomy , quantum mechanics , thermodynamics , organic chemistry
Abstract Self‐broadened widths of 28 SiH 4 in the ν 1 Q ‐branch have been measured at room temperature (295 K) using high‐resolution stimulated Raman Spectroscopy. These collisional widths have been obtained by fitting a super‐position of Voigt profiles to the experimental spectra in the pressure range 28–154 Torr. No evidence for line mixing within the tetrahedral components of a Q ( J ) line has been found. The line broadening coefficients for J up to 13 depend weakly on the rotational quantum number. The mean value is 103.7 × 10 −3 cm −1 atm −1 .