Microwave studies of collision-induced transitions between rotational levels. VIII. Collisions between NH/sub 3/ and polar molecules

Journal Article · Tue Mar 15 00:00:00 EST 1983 · J. Chem. Phys.; (United States)

OSTI ID:5502801

Fabris, A R; Oka, T

The technique of four-level microwave double resonance has been applied to the study of rotation-inversion transitions of NH/sub 3/ induced by collisions with various polar molecules. H/sub 2/O, D/sub 2/O, CH/sub 3/OH, CH/sub 3/X and CHX/sub 3/ (X = F, Cl, Br, I), NO, CO, and OCS were used as collision partners. The values of eta = ..delta..I/I observed for many four-level systems which are connected by dipole-type transitions (..delta..J = +- 1, ..delta..K = 0, parity +bold-arrow-left-right-) are given and qualitatively explained taking into account the long-range dipole--dipole interaction and the pattern of rotational energy levels of the collision partners.

• Research Organization: Herzberg Institute of Astrophysics, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR6
• OSTI ID: 5502801
• Journal Information: J. Chem. Phys.; (United States), Vol. 78:6
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
MOLECULE-MOLECULE COLLISIONS
CARBON MONOXIDE
CARBON OXYSULFIDE
HALOGENATED ALIPHATIC HYDROCARBONS
HEAVY WATER
METHANOL
NITRIC OXIDE
WATER VAPOR
ENERGY-LEVEL TRANSITIONS
MICROWAVE SPECTRA
ALCOHOLS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
FLUIDS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPECTRA
SULFUR COMPOUNDS
VAPORS
WATER
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena