UV laser photochemistry of CF/sub 2/Br/sub 2/

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

OSTI ID:5763160

Wampler, F B; Tiee, J J; Rice, W W; Oldenborg, R C

CF/sub 2/Br/sub 2/ has been irradiated at room temperature with KrF (248.4 nm) and ArF (193.3 nm) lasers. The fluorescence produced by the KrF laser irradiation appears to consist of only two ..nu../sub 2/ progressions, v'/sub 2/=6 and 5 for the CF/sub 2/ (/sup 1/B/sub 1/-X /sup 1/A/sub 1/) transition. The collision-free lifetime of the CF/sub 2/ emission was found to be 59 ns. The fluence dependence of the emission is quadratic. Upon irradiation of CF/sub 2/Br/sub 2/ with an ArF laser various emitting species were noted. Emission from CF(A /sup 2/..sigma../sup +/--X /sup 2/Pi), CF(B /sup 2/..delta..--X /sup 2/Pi), CF/sub 2/(/sup 2/B/sub 1/--X /sup 1/A/sub 1/), and Br/sub 2/(/sup 3/Pi/sub o/+u--/sup 1/..sigma../sup +/ /sub g/) molecules was noted. Laser-induced fluorescence excitation spectra confirmed the presence of CF/sub 2/. The ArF laser fluence dependence of CF/sub 2/(X /sup 1/A/sub 1/) formation was found to be 1.0.

• Research Organization: Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5763160
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 71:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CHEMISTRY
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
FLUORESCENCE
HALOGENATED ALIPHATIC HYDROCARBONS
LASER RADIATION
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMISTRY
RADIATIONS
SPECTRA
ULTRAVIOLET RADIATION