Vibrational excitation of CH/sub 3/F by collisions with ''hot'' H and D atoms

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · J. Chem. Phys.; (United States)

OSTI ID:5646010

McGee, T H; Weston, Jr, R E; Flynn, G W

Hot hydrogen atoms have been produced by photolysis of HBr, HI, and H/sub 2/S at 193 nm, and HI at 248 nm; D atoms were produced by photolysis of D/sub 2/S at 193 nm. Vibrational excitation of CH/sub 3/F in collisions with these hot atoms has been observed by detection of infrared emission at 3.3 ..mu..m (..nu../sub 1/, ..nu../sub 4/) and 9.6 ..mu..m (..nu../sub 3/). Relative probabilities for excitation of these modes have been determined, and the ..nu../sub 3//..nu../sub 1/, ..nu../sub 4/ ratio is much larger than is predicted by simple impulsive models. The ''isotope effect,'' i.e., relative excitation by H atoms compared to D atoms, is 1.4 for both vibrational modes.

• Research Organization: Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973
• DOE Contract Number: AC02-78ER04940
• OSTI ID: 5646010
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 83:1; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
COLLISIONS
DEUTERIUM
ELEMENTS
EMISSION SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
METHYL FLUORIDE
MOLECULE COLLISIONS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SPECTRA
STABLE ISOTOPES
VIBRATIONAL STATES