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 04:00:00 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), Journal Name: J. Phys. Chem.; (United States) Vol. 85:19; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

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