Relative energies and collisional kinetics of the B(. cap omega. = 1/2) and C(. cap omega. = 3/2) excited states of xenon fluoride as studied by laser-induced fluorescence

Journal Article · Thu Sep 17 00:00:00 EDT 1981 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150619a024· OSTI ID:5949823

Gedanken, A; Smith, A L

A pulsed nitrogen laser photodissociated F/sub 2/ in the presence of Xe, and the resulting ground-state XeF was excited by a second pulsed, tunable dye laser in the 0,4 and 0,5 bands of the B(1/2)-X(1/2) transition. Both dispersed fluorescence spectra and tunable laser excitation spectra, taken by using a gated detection system, show that the C state is lower in energy than the lowest vibrational level of the B state. The ratio of fluorescence intensities in the C-A and B-X transitions was measured as a function of xenon and argon pressure. An analytical model was developed for the time dependence of the B and C state concentrations after instantaneous excitation and in the presence of intersystem crossing, quenching, and radiative decay. Published rate constants for the excited state kinetics of XeF(B) and XeF(C) are reviewed, and model calculations of the measured intensity ratio are used to assess these rate constants.

• Research Organization: Drexel Univ., Philadelphia, PA
• OSTI ID: 5949823
• Journal Information: J. Phys. Chem.; (United States), Vol. 85:19
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
XENON FLUORIDES
EXCITED STATES
FLUORESCENCE
DYE LASERS
EXPERIMENTAL DATA
FLUORINE
GROUND STATES
KINETICS
LASER RADIATION
PULSED IRRADIATION
TIME DEPENDENCE
XENON
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
HALIDES
HALOGEN COMPOUNDS
HALOGENS
INFORMATION
IRRADIATION
LASERS
LIQUID LASERS
LUMINESCENCE
NONMETALS
NUMERICAL DATA
RADIATIONS
RARE GAS COMPOUNDS
RARE GASES
XENON COMPOUNDS
400201* - Chemical & Physicochemical Properties