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High‐pressure pure rotational CARS: comparison of temperature measurements with O 2 , N 2 and synthetic air
Author(s) -
Seeger T.,
Beyrau F.,
Bräuer A.,
Leipertz A.
Publication year - 2003
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.1094
Subject(s) - analytical chemistry (journal) , raman spectroscopy , atmospheric pressure , materials science , rotational temperature , chemistry , physics , meteorology , organic chemistry , optics , molecule
The accuracy of pure rotational coherent anti‐Stokes Raman spectroscopy (CARS) temperature measurements was investigated using O 2 , N 2 and synthetic air for comparison. These measurements were performed in a high‐pressure cell for pressures between 0.1 and 15 MPa. The cell temperature was varied between 300 to 700 K. The temperature values deduced from the pure rotational CARS S‐branch of O 2 are in good agreement with the reference thermocouple reading. For the temperature and pressure range investigated, the accuracy for O 2 measurements was better than that obtained for N 2 and synthetic air. Copyright © 2003 John Wiley & Sons, Ltd.