scholarly journals Symmetry breaking of the bending mode of CO2 in the presence of Ar

2020 ◽  
Vol 22 (37) ◽  
pp. 21488-21493
Author(s):  
T. A. Gartner ◽  
A. J. Barclay ◽  
A. R. W. McKellar ◽  
N. Moazzen-Ahmadi
Keyword(s):  
Carbon Dioxide ◽  
Infrared Spectrum ◽  
Symmetry Breaking ◽  
Laser Source ◽  
Fundamental Vibration ◽  
Bending Mode ◽  
Hot Band

The weak infrared spectrum of CO2–Ar corresponding to the (0111) ← (0110) hot band of CO2 is detected in the region of the carbon dioxide ν3 fundamental vibration, using a tunable OPO laser source to probe a pulsed supersonic slit jet expansion.

16O12C17O and 18O12C17O spectroscopy in the 1.2–1.25 μm region

2013 ◽  
Vol 91 (11) ◽  
pp. 963-965 ◽  
Author(s):  
D. Golebiowski ◽  
M. Herman ◽  
O. Lyulin
Keyword(s):  
Carbon Dioxide ◽  
Fourier Transform ◽  
High Resolution ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Spectral Element ◽  
Laser Source ◽  
Enhanced Absorption ◽  
Hot Band ◽  
Infrared Absorption Spectra

Near-infrared absorption spectra of a carbon dioxide sample enriched with oxygen-17 were recorded in the spectral range 1.2–1.25 μm. A high-resolution continuous scan Fourier transform interferometer fitted with a femto OPO/Idler laser source and cavity-enhanced absorption was used. The optimal root mean squared noise equivalent absorption was 1.2 × 10−10 cm−1Hz–1/2 per spectral element, corresponding to αmin = 10−8 cm−1. Two cold bands in 17O12C18O and one hot band in 16O12C17O were newly identified and rotationally analyzed. More lines than previously published (Lyulin et al. J. Quant. Spectrosc. Radiat. Transfer, 113, 2167 (2012)), were assigned in the observed bands of 12C17O2 and 16O12C17O. New upper state rotational constants were obtained from a band-by-band analysis.

The ν2 bending mode infrared spectrum of clustered carbon dioxide

1993 ◽  
Vol 207 (4-6) ◽  
pp. 517-520 ◽  
Author(s):  
T.E. Gough ◽  
Tang-Yu Wang
Keyword(s):  
Carbon Dioxide ◽  
Infrared Spectrum ◽  
Bending Mode

The infrared spectrum of di-imide near 7.6 μm

1981 ◽  
Vol 59 (5) ◽  
pp. 663-672 ◽  
Author(s):  
K-E. J. Hallin ◽  
J. W. C. Johns ◽  
A. Trombetti
Keyword(s):  
Infrared Spectrum ◽  
Gas Phase ◽  
Type A ◽  
Phase Spectrum ◽  
The Other ◽  
Mode Analysis ◽  
Simultaneous Presence ◽  
Torsional Mode ◽  
Bending Mode ◽  
Type C

The gas phase spectrum of N2H2 has been investigated in the region of 7.6 μm at a resolution of about 0.06cm−1. Two bands have been identified; one, near 1288 cm−1, is a type C band and must correspond to ν4 (the hitherto unidentified Au torsional mode), and the other, near 1317 cm−1, is a type A–B hybrid and corresponds to ν6 (the Bu bending mode). Analysis of the spectrum is complicated by the simultaneous presence of strong A-type and B-type Coriolis interactions which couple the observed levels.

Infrared Spectrum of Carbon Dioxide Anion Radical

1966 ◽  
Vol 44 (5) ◽  
pp. 1913-1918 ◽  
Author(s):  
K. O. Hartman ◽  
I. C. Hisatsune
Keyword(s):  
Carbon Dioxide ◽  
Infrared Spectrum ◽  
Anion Radical

Line Shape in the 0001–1000 Band of Nitrous Oxide and Carbon Dioxide: Contribution of the "Hot Band" 0111–1110 to its Determination

1974 ◽  
Vol 52 (5) ◽  
pp. 470-471 ◽  
Author(s):  
Nelly Lacome
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Line Profile ◽  
Line Shape ◽  
Order Of Magnitude ◽  
Hot Band

The deviation of line profile from Lorentz shape in the 0001–1000 band of nitrous oxide and carbon dioxide has been previously studied. Influence of the hot band 0111–1110 on the order of magnitude of this deviation is now pointed out and analyzed.

Infrared laser spectroscopy of cations

1988 ◽  
Vol 324 (1578) ◽  
pp. 121-130 ◽  
Keyword(s):  
Modulation Frequency ◽  
Neutral Species ◽  
Velocity Modulation ◽  
Laser Absorption ◽  
Infrared Laser Spectroscopy ◽  
Bending Mode ◽  
Vibrational Levels ◽  
Hot Band ◽  
Diode Laser Absorption ◽  
Potential Maximum

The high-resolution infrared diode laser absorption spectra of several cations have been recorded and analysed. Most of the spectra were detected with an AC discharge and the velocity-modulation technique, with frequencies up to 60 kHz. In addition to ions, this method can also detect transient neutral species by recording at twice the modulation frequency (concentration modulation). As an example, spectra of an infrared electronic transition in H 2 are described briefly. The diatomic cationic species discussed are CO+ (X 2 E + ) and SH + (X 3 E - ), which are compared with the isoelectronic neutral free radicals CN and PH respectively, also in their ground states. Polyatomic cations that have been studied include HCO+ and H 3 0 + . The bending mode of HCO+ (2) shows a distinctive Q-branch with many resolved components at Doppler-limited resolution and also some hot-band lines. The HCO + spectrum can be combined with microwave measurements in the ground vibrational level to yield predictions for (2 1 ) rotational transitions for astrophysical searches. The most recent spectra of the v 2 ‘umbrella’ mode of H 3 O + , the 2+ <- I - band, provide spectroscopic data on vibrational levels approximately 1000 cm -1 above the inversion potential maximum.

scholarly journals 1579 NM Fiber Laser Source for Spaceborne Monitoring of Carbon Dioxide

2016 ◽  
Vol 119 ◽  
pp. 17010
Author(s):  
Nicolas Cézard ◽  
Laurent Lombard ◽  
Julien Le Gouët ◽  
Didier Goular ◽  
Alexandre Bresson ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Fiber Laser ◽  
Laser Source ◽  
Spaceborne Monitoring
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