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Continuous-Wave CO2 Laser-Excited Infrared Emission Spectroscopy

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Radiation of a cw CO2 laser can be used to excite infrared emission spectra of nearly all molecular gases by adding small amounts of SF6 as a sensitizer. These emission spectra show a thermal equilibrium between vibrational, rotational, and translational states with temperatures up to 1200 K. Temperature profiles of these gases about a focused cw CO2 laser beam are analyzed by Raman spectroscopy. The detection of small amounts of sample and investigations of cw laser-induced chemical reactions are interesting potential applications.

Keywords: Emission spectroscopy; FT-IR; Gases, SF6; Laser, CO2; Raman spectroscopy

Document Type: Research Article


Affiliations: 1: Nicolet Instrument GmbH, D-6050 Offenbach (Main), F.G.R. 2: Veba Kraftwerke Ruhr AG, D-4650 Gelsenkirchen, F.G.R. 3: Universität GHS Essen, Institut für Physikalische und Theoretische Chemie, D-4300 Essen 1, F.R.G.

Publication date: August 1, 1987

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