Laser-induced mass spectrometry

Details Laser-induced mass spectrometry Laser-induced mass spectrometry

G - Physics

01

N

358/9

G01N 23/00 (2006.01)

Patent

CA 1103815

ABSTRACT OF THE DISCLOSURE Gases or gas mixtures are analyzed by a device and process involving laser-induced vibrational excitation of the gases or mixtures, followed by mass spectrometry. A sample of the gas is subjected to radiation, preferably infrared radiation, from a tunable laser, so as to cause vibrational- excitation of the sample by absorption of the radiation. The sample so treated is then subjected to mass spectrometry, which detects changes in the vibrational-excitation of the sample. Detection of such changes indicates infrared absorption by the sample at the wavelength at which the tunable laser is set. The wavelength of infrared absorption so determined is a characterizing property of the sample.

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