Collision dynamical information from pressure broadening measurements: Application to carbon monoxide

1983 ◽  
Vol 78 (6) ◽  
pp. 3990-3998 ◽  
Author(s):  
Joseph BelBruno ◽  
Jack Gelfand ◽  
H. Rabitz
Keyword(s):  
Carbon Monoxide ◽  
Pressure Broadening ◽  
Dynamical Information

Pressure broadening studies on vibration-rotation bands, I. The determination of line widths

1959 ◽  
Vol 251 (1267) ◽  
pp. 458-474 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Pressure Broadening ◽  
Fundamental Vibration ◽  
Deuterium Chloride ◽  
Line Widths ◽  
Vibration Rotation

Methods for determining the true widths of lines in simple vibration-rotation bands have been considered, and a procedure has been devised for studying the effect of added gases upon the line widths in the fundamental vibration bands of deuterium chloride and carbon monoxide

Absorption intensity measurements of the first overtone band of CO

1981 ◽  
Vol 59 (10) ◽  
pp. 1367-1372 ◽  
Author(s):  
G. Chandraiah ◽  
G. R. Hébert
Keyword(s):  
Carbon Monoxide ◽  
Line Intensity ◽  
Absolute Intensity ◽  
Intensity Data ◽  
Pressure Broadening ◽  
Absorption Intensity ◽  
Overtone Band ◽  
Intensity Measurements ◽  
Best Value ◽  
Measured Line

The absolute intensity A2–0 of the 2–0 band of carbon monoxide has been measured with helium and argon as pressure broadening gases at pressures up to 600 amagat. A separate band intensity value has been derived from the measurements of several P-branch line intensity data and the Herman–Wallis formula. The best value obtained is A2–0 = (2.11 ± 0.08) cm−2 amagat−1. The square of the rotationless matrix element, [Formula: see text] has been found to be (4.39 ± 0.02)10−5 D2, as estimated from the measured line intensity values.

Pressure broadening and line shift measurements of carbon monoxide in collision with helium from 1 to 600 K

1996 ◽  
Vol 105 (10) ◽  
pp. 3994-4004 ◽  
Author(s):  
Matthew M. Beaky ◽  
Thomas M. Goyette ◽  
Frank C. De Lucia
Keyword(s):  
Carbon Monoxide ◽  
Line Shift ◽  
Pressure Broadening

scholarly journals Water in exoplanets

2012 ◽  
Vol 370 (1968) ◽  
pp. 2749-2764 ◽  
Author(s):  
Giovanna Tinetti ◽  
Jonathan Tennyson ◽  
Caitlin A. Griffith ◽  
Ingo Waldmann
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Radiative Transfer ◽  
Research Effort ◽  
Pressure Broadening ◽  
Detailed Consideration ◽  
Significant Research ◽  
Final Confirmation ◽  
Methane Carbon

Exoplanets—planets orbiting around stars other than our own Sun—appear to be common. Significant research effort is now focused on the observation and characterization of exoplanet atmospheres. Species such as water vapour, methane, carbon monoxide and carbon dioxide have been observed in a handful of hot, giant, gaseous planets, but cooler, smaller planets such as Gliese 1214b are now analysable with current telescopes. Water is the key chemical dictating habitability. The current observations of water in exoplanets from both space and the ground are reviewed. Controversies surrounding the interpretation of these observations are discussed. Detailed consideration of available radiative transfer models and linelists are used to analyse these differences in interpretation. Models suggest that there is a clear need for data on the pressure broadening of water transitions by H 2 at high temperatures. The reported detections of water appear to be robust, although final confirmation will have to await the better quality observational data provided by currently planned dedicated space missions.

Pressure broadening studies on vibration-rotation bands, IV. Optical collision diameters for foreign-gas broadening of CO and DCl bands

1963 ◽  
Vol 272 (1351) ◽  
pp. 453-466 ◽  
Keyword(s):  
Carbon Monoxide ◽  
Quantum Number ◽  
Line Width ◽  
Interaction Potential ◽  
Similar Data ◽  
Dispersion Forces ◽  
Pressure Broadening ◽  
Interaction Forces ◽  
Deuterium Chloride ◽  
Vibration Rotation

Results are given for the pressure broadening of lines in the vibration-rotation bands of carbon monoxide and deuterium chloride, by a wide variety of added gases including both non-polar and polar molecules. Optical collision diameters have been calculated and considered in relation to the interaction forces likely to be involved. For carbon monoxide, a rough correlation is found between the optical collision diameter and the interaction potential for non-polar broadeners where dispersion forces are dominant, but derivations occur with some polar broadeners. Similar data for deuterium chloride illustrate the importance of dipolar forces, but no simple theory explains the results satisfactorily. The variation of line width with J quantum number is discussed.

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