Vibrational-rotational relaxation of the simplest hydrogen-containing molecules (review)
In connection with the development of chemical lasers much attention is now devoted to the study of kinetic processes is gaseous mixtures containing the hydrogen halides. Vibrational relaxation of molecules if primarily studied without specifying its relation to the rational levels. Rotational relaxation is regarded a priori as faster than vibrational relaxation, so that the population of the rotational levels is assumed to be in equilibrium. This approach to the relaxation of hydrogen halide molecules (and other diatomic hydrogen-containing molecules), however, is unable to explain satisfactorily the results of the papers discussed below. An analysis of the data obtained in these papers leads to the conclusion that the general picture of relaxation in diatomic hydrogen-containing molecules must be viewed as a unified process of vibrational and rotational relaxation. It is shown that those effects observed during vibrational relaxation of such molecules which are unusual from the standpoint of the theory of vibrational-translational relaxation are well explained in terms of intermolecular vibrational-rotational relaxation together with pure rotational relaxation.
- Research Organization:
- P.N. Lebedev Physics Institute, USSR
- OSTI ID:
- 5763852
- Journal Information:
- High Energy Chem. (Engl. Transl.); (United States), Journal Name: High Energy Chem. (Engl. Transl.); (United States) Vol. 21:1; ISSN HIECA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420300 -- Engineering-- Lasers-- (-1989)
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC MODELS
CHEMICAL LASERS
COLLISIONS
DE-EXCITATION
DEUTERIUM COMPOUNDS
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY SPECTRA
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
HYDROXIDES
INORGANIC ACIDS
LASER MATERIALS
LASER RADIATION
LASERS
MATERIALS
MATHEMATICAL MODELS
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
MOLECULES
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
RADIATIONS
RELAXATION TIME
REVIEWS
ROTATIONAL STATES
SPECTRA
TEMPERATURE DEPENDENCE
VIBRATIONAL STATES