Stable carbon isotope measurements using laser spectroscopy
- Author:
- Sauke, T. B.
- Published:
- Oct 1, 1991.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Becker, J. F.
- Access Online:
- hdl.handle.net
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Summary:
- The 2300 cm(exp -1) spectral region is especially interesting because (12)CO2 and (13)CO2 bands overlap in such a way that their rotational lines have approximately equal absorbance at the anticipated isotopic ratio (approximately 90) of carbon on Earth and Mars. Pairs of rotational lines we have studied are separated by as little as 0.050 cm(exp -1), but are well resolved with a tunable diode laser. Using sophisticated sweep integration and signal averaging techniques, we have measured the stable isotope ratio in carbon dioxide to a precision of better than 1 percent.
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 19920004380., Accession ID: 92N13598., and NASA, Washington, Fourth Symposium on Chemical Evolution and the Origin and Evolution of Life; p 27.
- Terms of Use and Reproduction:
- No Copyright.
- Access Online:
- hdl.handle.net
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