Self-broadening of the absorption lines of the fundamental vibration-rotation band of HF molecules and processes of rotational relaxation

1979 ◽  
Vol 30 (6) ◽  
pp. 754-757
Author(s):  
G. K. Vasil'ev ◽  
V. I. Gur'ev ◽  
A. O. Koval'skii
Keyword(s):  
Absorption Lines ◽  
Rotational Relaxation ◽  
Fundamental Vibration ◽  
Rotation Band ◽  
Vibration Rotation

Infrared spectrum of the fundamental vibration-rotation band of 3.SIGMA.- oxoniumylidene (OH+)

1985 ◽  
Vol 89 (17) ◽  
pp. 3614-3617 ◽  
Author(s):  
Mark W. Crofton ◽  
Robert S. Altman ◽  
Mary Frances Jagod ◽  
Takeshi Oka
Keyword(s):  
Infrared Spectrum ◽  
Fundamental Vibration ◽  
Rotation Band ◽  
Vibration Rotation

Laboratory Observations of Collision-Induced Emission in the Fundamental Vibration-Rotation Band ofH2

1982 ◽  
Vol 49 (26) ◽  
pp. 1913-1916 ◽  
Author(s):  
R. Krech ◽  
G. Caledonia ◽  
S. Schertzer ◽  
K. Ritter ◽  
T. Wilkerson ◽  
...  
Keyword(s):  
Fundamental Vibration ◽  
Rotation Band ◽  
Vibration Rotation

scholarly journals Infrared Heterodyne Spectroscopy of Circumstellar Molecules

1980 ◽  
Vol 87 ◽  
pp. 503-508 ◽  
Author(s):  
A. L. Betz ◽  
R.A. McLaren
Keyword(s):  
Mass Loss ◽  
Absorption Lines ◽  
Line Profiles ◽  
Circumstellar Envelopes ◽  
Rotation Band ◽  
Heterodyne Spectroscopy ◽  
Vibration Rotation

Ammonia has been detected in the circumstellar envelopes of IRC+10216, VY CMa, VX Sgr, and IRC+10420. A number of absorption lines of 14NH3 in the ν2 vibration-rotation band around 28 THz (950 cm-1) have been observed at a velocity resolution of 0.2 km/s. Typical linewidths are 1 to 4 km/s, and the details of the line profiles provide additional insights on the process of mass loss in these stars.

Infrared spectrum of the fundamental vibration–rotation band of OD−

1986 ◽  
Vol 85 (4) ◽  
pp. 1785-1788 ◽  
Author(s):  
B. D. Rehfuss ◽  
M. W. Crofton ◽  
T. Oka
Keyword(s):  
Infrared Spectrum ◽  
Fundamental Vibration ◽  
Rotation Band ◽  
Vibration Rotation

Collision-induced emission in the fundamental vibration-rotation band ofH2

1991 ◽  
Vol 43 (11) ◽  
pp. 6010-6017 ◽  
Author(s):  
G. E. Caledonia ◽  
R. H. Krech ◽  
T. D. Wilkerson ◽  
R. L. Taylor ◽  
G. Birnbaum
Keyword(s):  
Fundamental Vibration ◽  
Rotation Band ◽  
Vibration Rotation

The ν2 fundamental vibration-rotation band of T2O

1972 ◽  
Vol 44 (2) ◽  
pp. 197-205 ◽  
Author(s):  
Raymond A. Carpenter ◽  
Norman M. Gailar ◽  
Henry W. Morgan ◽  
Percy A. Staats
Keyword(s):  
Fundamental Vibration ◽  
Rotation Band ◽  
Vibration Rotation

Infrared spectra, rotational correlation functions, and intermolecular mean squared torques in compressed gaseous methane

1968 ◽  
Vol 46 (11) ◽  
pp. 1331-1340 ◽  
Author(s):  
R. L. Armstrong ◽  
S. M. Blumenfeld ◽  
C. G. Gray
Keyword(s):  
Correlation Functions ◽  
Theoretical Calculations ◽  
Dominant Contribution ◽  
Dispersion Interactions ◽  
Fundamental Vibration ◽  
Order Of Magnitude ◽  
The Mean ◽  
Vibration Rotation ◽  
Experimental Values ◽  
Rotational Correlation

Extensive measurements of the methane ν3 and ν4 fundamental vibration–rotation bands in CH4–He mixtures and the ν3 band in CH4–He, CH4–N2, and CD4–He mixtures have been carried out in infrared absorption at 295 °K to pressures of 3000 atm. Some profiles of the ν3 band in CH4–Ar mixtures and in pure CH4 have also been obtained. Rotational correlation functions, band moments, and intermolecular mean squared torques have been determined from the ν3 band profiles. Theoretical calculations of the mean squared torque due to anisotropic multipolar, induction and dispersion interactions have been carried out. The theoretical and experimental torques are in order-of-magnitude agreement for the CH4–N2 and CH4–CH4 systems; for CH4–He, CD4–He, and CH4–Ar the theoretical values are two to three orders of magnitude too small to account for the experimental values, indicating that in these cases the dominant contribution to the torques is given by the anisotropic overlap forces.

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