Isotopic gas analyzer

Details Isotopic gas analyzer Isotopic gas analyzer

2006-06-20

2006-06-20

Nasser, Robert L. (Department: 3736)

Surgery

Diagnostic testing

Respiratory

C073S023300, C422S084000

Reexamination Certificate

active

07063667

ABSTRACT:
An NDIR spectrometer based on the use of wavelength specific lamp sources, whose emission spectrum consists of discrete, narrow lines characteristic of the isotope present in the lamp, and which it is desired to measure with the spectrometer. This allows very high intrinsic sensitivity, enabling the use of an extremely compact absorption cell with a very short path length. In addition, the source can be self-modulated, such that problems associated with external choppers are avoided. Furthermore, there is insignificant cross sensitivity between the isotopes themselves and between the isotopes and other ambient gases in the operating environment.

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