Open AccessSupersonic dispersion in gases. The vibrational activation of the acetaldehyde molecule
Author(s) -
E. A. Alexander,
J. D. Lambert
Publication year - 1942
Publication title -
proceedings of the royal society of london. series a, mathematical and physical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.814
H-Index - 135
eISSN - 2053-9169
pISSN - 0080-4630
DOI - 10.1098/rspa.1942.0022
Subject(s) - acetaldehyde , anharmonicity , supersonic speed , dispersion (optics) , intramolecular force , materials science , molecule , chemistry , optics , physics , thermodynamics , condensed matter physics , stereochemistry , organic chemistry , ethanol
An investigation of the supersonic dispersion in acetaldehyde vapour was carried out in piezoelectric, magnetostriction and Kundt’s tube interferometers over as wide a range of frequency and pressure as possible. Acetaldehyde is found to exhibit a multiple dispersion region which is independently confirmed by absorption measurements. This implies that certain intramolecular vibrations are activated independently.