Infrared--infrared double resonance in a supersonic molecular beam: Accurate determination of the cross section of collision induced rotational transitions in state selected NH/sub 3/
Journal Article
·
· J. Chem. Phys.; (United States)
A method of infrared--infrared double resonance in a nozzle beam is developed for the study of elementary processes of molecular collisions. A spectroscopic method to characterize the molecular states in the beam is also described. The NH/sub 3/ molecules are prepared in a kinematically and also spectroscopically ''pure'' state and then are subjected to collisions with various species of target molecules such as NH/sub 3/, CH/sub 3/F, CH/sub 3/Cl, and N/sub 2/O. A simplified calculation of the cross sections based on Anderson--Tsao--Curnutte theory can give a fairly good reproduction of the measured values. The elimination of a systematic error in the total cross section measurements is discussed.
- Research Organization:
- Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
- OSTI ID:
- 5145932
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 83:10; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
BEAMS
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
COLLISIONS
CROSS SECTIONS
DOUBLE RESONANCE METHODS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUID FLOW
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDRIDES
HYDROGEN COMPOUNDS
INFRARED SPECTRA
METHYL CHLORIDE
METHYL FLUORIDE
MOLECULAR BEAMS
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NITROUS OXIDE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
ROTATIONAL STATES
SPECTRA
SUPERSONIC FLOW
TOTAL CROSS SECTIONS
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
BEAMS
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
COLLISIONS
CROSS SECTIONS
DOUBLE RESONANCE METHODS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUID FLOW
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDRIDES
HYDROGEN COMPOUNDS
INFRARED SPECTRA
METHYL CHLORIDE
METHYL FLUORIDE
MOLECULAR BEAMS
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NITROUS OXIDE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
ROTATIONAL STATES
SPECTRA
SUPERSONIC FLOW
TOTAL CROSS SECTIONS