Abstract:
The method for determining the carbon isotopic ratio from CO2 absorption spectra in the optical cavity containing atmospheric air with the natural contents of carbon dioxide ≈0.03% is described. The measurements are performed at atmospheric pressure in the conditions of overlapping absorption lines. The measurement accuracy is 0.3‰.
Keywords:
ratio of isotope concentrations, diode laser, cavity, absorption spectroscopy.
Citation:
A. A. Zaytsev, I. V. Nikolaev, V. N. Ochkin, S. N. Tskhai, “External-cavity diode laser spectrometer for measuring the concentration ratio 13CO2/12CO2 by absorption in the range of 1.6 μm”, Kvantovaya Elektronika, 45:7 (2015), 680–684 [Quantum Electron., 45:7 (2015), 680–684]
Linking options:
https://www.mathnet.ru/eng/qe16213
https://www.mathnet.ru/eng/qe/v45/i7/p680
This publication is cited in the following 3 articles:
V. N. Ochkin, Phys. Wave Phenom., 28:1 (2020), 21–48