Numéro
J. Physique Lett.
Volume 42, Numéro 19, octobre 1981
Page(s) 441 - 443
DOI https://doi.org/10.1051/jphyslet:019810042019044100
J. Physique Lett. 42, 441-443 (1981)
DOI: 10.1051/jphyslet:019810042019044100

Collision induced absorption in CO2 at 0.091 cm-1

G.T. Kouroupetroglou et G. Boudouris

National Technical University, Physics Lab. A, Athens-624, Greece


Abstract
Collision induced microwave absorption has been studied at 0.091 cm -1 and 293 K up to 60 amagat density. Expressing the dielectric loss ε" in the form ε" = Aνρ2(1 - Bp), where ν is the frequency in cm-1 and p is the density, we find A = 0.22 × 10-7 (cm.amagat-2) and B = 0.008 2 (amagat -1). As a result the molecular quadrupole moment of CO2 is calculated to be 5.6 × 10-26 (esu).


Résumé
On étudie l'absorption induite par collisions à 0,091 cm-1 et 293 K, jusqu'à la densité de 60 amagat. En exprimant les pertes diélectriques ε" sous la forme ε" = Aνρ2(1 - Bp), ν étant la fréquence en cm-1 et p la densité, nous trouvons A = 0,22 × 10-7 (cm. amagat-2) et B = 0,008 2 (amagat -1). A la suite de cette étude, le moment quadrupolaire de la molécule CO2 est calculé et trouvé égal à 5,6 × 10-26 (esu).

PACS
3320B - Radiofrequency and microwave molecular spectra.
3520M - Molecular electric and magnetic moments and derivatives, polarizability, and magnetic susceptibility.
5150 - Electrical phenomena in gases.

Key words
carbon compounds -- dielectric losses -- dielectric properties of gases -- molecular moments -- radiofrequency and microwave spectra of polyatomic inorganic molecules -- collision induced microwave absorption -- CO sub 2 -- 0.091 cm sup 1 -- 293K -- dielectric loss -- molecular quadrupole moment