Mesure des intensités des bandes d'absorption rovibrationnelles 0 → 4 et 0 → 5 de l'acide iodhydrique gazeux

1978 ◽  
Vol 56 (6) ◽  
pp. 727-736 ◽  
Author(s):  
P. Niay ◽  
P. Bernage ◽  
C. Coquant ◽  
R. Houdart

By using a SISAM spectrometer with a 0.03 cm−1 resolving power we have measured the line-strengths for the 4 ← 0 and 5 ← 0 absorption bands of the HI molecule. The pressure in the White cell was important enough to assume the lines to be described through a Lorentz profile, and we have used the 'curve of growth' method. By using all the available data on the 1 ← 0,2 ← 0, and 3 ← 0 bands, we have calculated the first six coefficients of the dipole moment expansion series. The shape of the experimental dipole moment function shows that the HI bond is primarily covalent.

1957 ◽  
Vol 26 (6) ◽  
pp. 1671-1677 ◽  
Author(s):  
William S. Benedict ◽  
Robert Herman ◽  
Gordon E. Moore ◽  
Shirleigh Silverman

1981 ◽  
Vol 44 (1) ◽  
pp. 111-123 ◽  
Author(s):  
Hans-Joachim Werner

Nine vibrational absorption bands of dideutero-acetylene have been examined with very high resolving power. The rotational constants have been determined for the vibrational levels concerned, and the coefficients α i have been determined with more convincing accuracy than previously. In some of the bands the Q branches have been resolved, so that the l -doubling coefficients q i could be derived, and details could be established about the doublet components in some II levels. The results emphasize the need of high resolution if the vibrational assignments are to be unambiguous, and if reliable values of the rotational constants are to be derived. A value of B e has been obtained, and the vibrational anharmonicity coefficients have been considered briefly. Estimates of the centrifugal stretching constants D i in different vibrational states have been made, and one anomalous case has been found.


1977 ◽  
Vol 32 (8) ◽  
pp. 897-898 ◽  
Author(s):  
Y. K. Chan ◽  
B. S. Rao

Abstract The radial Schrödinger wave equation with Morse potential function is solved for HF molecule. The resulting vibration-rotation eigenfunctions are then used to compute the matrix elements of (r - re)n. These are combined with the experimental values of the electric dipole matrix elements to calculate the dipole moment coefficients, M 1 and M 2.


2013 ◽  
Vol 7 (6) ◽  
pp. 721-733 ◽  
Author(s):  
Sh. Sh. Nabiev ◽  
L. A. Palkina ◽  
V. I. Starikov

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