Jun 1, 2018 · The Raman spectrum of carbon dioxide (12 C 16 O 2) is a Fermi doublet with maxima at 1285 cm −1 and 1388 cm −1 resulting from the interaction of the ν 1 fundamental band and the 2ν 2 overtone.

The CO 2 content in gases or liquids can be determined based on the CO 2 Raman spectrum, which makes Raman spectroscopy a powerful process analytical technology for CO 2 detection.

Raman spectra of CO2 fluids were measured at 288-329 K and densities of 0.81-1.16g/cm (3). The peak area ratios of hot bands at 1265 and 1408 cm (-1) and Fermi doublet peaks at 1388 and 1285...

We investigated the applicability of Raman microprobe spectroscopy for determining the density of CO2 in fluid inclusions in minerals of mantle-derived xenolith samples. A separation (delta)...

The paper demonstrates the possibility of measuring the carbon dioxide (CO2) concentration in atmo-spheric air using Raman spectroscopy. Three methods have been studied for deriving the CO2 concentra-tion from the Raman spectra (the peak intensity ratio, the integrated intensity ratio, the contour fit method).

Oct 29, 2024 · The Raman spectrum of CO2 from room temperature to 1800 K has been measured in a series of experiments. The differential Raman scattering cross-sections for the fundamental bands at 1285.41 cm−1 and 1388.18 cm−1 have been obtained from reference bands of H2 and N2 as intensity standards.

The strong pair of doub-let bands at 2.7p are interpreted as combination bands corresponding to vv+ {vi, 2vi } and the bands at 2.0p and 1.6p are higher members of the same sequence.

Feb 1, 2007 · On the basis of such results, we measured Raman spectra of CO 2 in sc-CO 2 containing compounds with different donicity. As a result, we found out that the wavenumbers (νl) of Raman bands of CO 2 correlate with the donor number (DN) of compounds, i.e., νl = 1281.24–0.0109 DN at 25.0 MPa and 40 °C.

Oct 29, 2023 · Here, we report on in-situ non-destructive analyses of the C stable isotopic composition of CO 2, applying a novel high-resolution Raman configuration on 42 high-density CO 2 fluid inclusions...

The Raman spectra of solid CO 2, N 2 O, N 2, and CO have been observed. Each spectrum can be analyzed by assuming an approximately ordered structure isomorphous with that of CO 2.