The absorption intensity of simultaneous vibrational transitions in gas mixtures

✍ Scribed by J.P. Colpa; J.A.A. Ketelaar

• Publisher: Elsevier Science
• Year: 1958
• Weight: 518 KB
• Volume: 24
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(58)80122-6

✦ Synopsis

Synopsis

A formula is derived for the intensity of those simultaneous transitions in gas mixtures in which take part an infrared-active vibrational transition of one molecule and a Raman-active vibrational transition of another molecule. We applied this formula to the simultaneous transition observed in mixtures of carbon dioxide and hydrogen at 6510 cm -I. Using two different values reported in literature for the derivative of the polarizability of hydrogen with respect to the intermolecular distance, we find for the ~ntegrated binary absorption coefficient values of 0.63 × 10 -a Am-2cm -2 and 1.2 × l0 -a Am-2cm -2. The experimental value is 0.88 × 10 -3 Am-~cm -2.