System and method for isotope ratio analysis and gas detection b

Measuring and testing – Gas analysis – By vibration

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73 2402, 73 233, 25033913, 250343, 356432, 356437, G01N 2117

Patent

active

061486582

ABSTRACT:
A system and method are set forth for photoacoustical analysis of isotope and other compounds having telltale absorption wavelengths between 1700-2500 nm. The system and method includes a Co:Mg F.sub.2, optical parametric oscillator (OPO) or diode laser tunable between 1700-2500 nm which is directed into a sample at energies sufficient to generate detectable acoustical emissions. A microphone detects the emissions for processing and analysis. The system and method is adapted to detect stable isotope compounds such as .sup.13 CO.sub.2 as well as other chemical compounds. For non-gaseous compounds, a CO.sub.2 or diode laser is used to photoablate the baseous sample containing the suspected compounds.

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