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.

Absorption intensity measurements of the second overtone band of NO

1991 ◽  
Vol 69 (5) ◽  
pp. 597-602 ◽  
Author(s):  
G. Chandraiah ◽  
P. Gillard
Keyword(s):  
Dipole Moment ◽  
High Pressures ◽  
Measurement Data ◽  
Absolute Intensity ◽  
Internuclear Separation ◽  
Pressure Broadening ◽  
Gaseous Mixtures ◽  
Overtone Band ◽  
Intensity Measurements ◽  
The Absolute

The absolute intensity A3–0 of the second overtone band of NO has been measured using helium and argon as pressure broadening gases at mixture densities up to 360 amagat. The absolute intensity, obtained from the integrated absorption coefficients of NO–He and NO–Ar gaseous mixtures at high pressures, is found to be (4.08 ± 0.21) × 10−2 cm−2 amagat−1. From the line intensity measurement data of Meyer, Haeusler, and Barchewitz and the absolute intensity obtained with the NO–He gaseous mixtures, the rotationless matrix element R3–0 (0) of the 3–0 band of NO is calculated and its value is 7.75 × 10−4 D. This value of R3–0 (0) is combined with previous results on the NO 1-0 and 2-0 bands to obtain a dipole moment expression accurate to M3. The following expansion for the dipole moment function in the ground state of NO is determined: M (x) = −0.166 + 2.56x−1.94x−1.20x3 D, where x is the relative internuclear separation (r−re)/re.

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

Quantitative Messung des Elektronenaffinitätskontinuums von Chlor mit dem Stoßwellenrohr / Quantitative Measurement Of The Electron Affinity Continuum Of Chlorine With The Shock Tube

1972 ◽  
Vol 27 (6) ◽  
pp. 989-995 ◽  
Author(s):  
G. Pletsch
Keyword(s):  
Shock Tube ◽  
Cross Section ◽  
Electron Affinity ◽  
Quantitative Measurement ◽  
Wavelength Region ◽  
Electron Attachment ◽  
Absolute Intensity ◽  
Intensity Measurements ◽  
Long Wave ◽  
Chlorine Ion

Abstract Using a mixture of chlorine with krypton the continuous spectrum resulting from electron attachment to chlorine atoms is produced in a shock tube. Absolute intensity measurements lead to the detachment cross-section of the negative chlorine ion in the wavelength region between the long-wave threshold at 3434 Å and 2700 Å. The cross-section is compared with known experimental and theoretical values.

Sign in / Sign up

Export Citation Format

Share Document