Laser induced fluorescence studies of the reactions of barium (/sup 1/S, /sup 3/D) and strontium (/sup 1/S, /sup 3/P) with halogenated methanes

Journal Article · Sun Apr 15 04:00:00 EST 1979 · J. Chem. Phys.; (United States)

OSTI ID:6141343

Solarz, R W; Johnson, S A

Laser excitation of barium and strontium atoms followed by laser induced fluorescence detection of chemical reaction products is used to study the dynamics of reactive collisions of these reagents with halogenated methanes. We report state-to-state distributions in reactions of ground state Ba and ground state Sr, (/sup 1/S/sub 0/), and laser excited Ba(/sup 3/D/sub 2/ and /sup 3/D/sub 1/) and Sr(/sup 3/P/sub 1/) with CH/sub 3/X, CF/sub 3/X (X=F,Cl,Br), CCl/sub 3/F, and CCl/sub 4/. We demonstrate that in certain cases reaction can be initiated by electronic excitation of the atomic reagent. We also show that the vibrational energy distribution of the diatomic alkaline earth halide product is in each case determined principally by the nature of the reacting halogenated methane irrespective of the surface on which the reaction is initiated. Measurements of the relative reactivity of different spin orbit states of excited barium are also presented.

• Research Organization: University of California, Lawrence Livermore Laboratory, Livermore, California 94550
• OSTI ID: 6141343
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 70:8; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ALKALINE EARTH METALS
ALKANES
ATOMS
BARIUM
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FLUORESCENCE
HYDROCARBONS
LASER RADIATION
LUMINESCENCE
METALS
METHANE
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
RADIATIONS
STRONTIUM