ArF excimer laser photolysis of ammonia: formation of NH and ND in the A/sup 3/PI state

Journal Article · Thu May 24 04:00:00 EDT 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150655a006· OSTI ID:6681355

Haak, H K; Stuhl, F

NH/sub 3/ and ND/sub 3/ were photolyzed with an ArF (193 nm) excimer laser. Besides weak emission from ND(b/sup 1/..sigma../sup +/), strong fluorescence emission from NH(A/sup 3/PI) were observed in the investigated wavelength region 130-500 nm. Measurements of the fluorescence intensity and rotationally resolved spectra indicate a two-photon resonance process. In this dissociation process rotationally hot NH (ND) in the A/sup 3/PI state is generated with almost no translational energy left for either detached H atom. The dynamics of the photodissociation is discussed. Lifetime measurements of the excited A/sup 3/PI states indicate (a) a slight isotope effect and (b) longer zero-pressure lifetimes than previously recommended.

• Research Organization: Ruhr-Universitat, Bochum, West Germany
• OSTI ID: 6681355
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:11; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AMMONIA
ARGON COMPOUNDS
ARGON FLUORIDES
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUORESCENCE
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LASER RADIATION
LIGHT NUCLEI
LUMINESCENCE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
RARE GAS COMPOUNDS
STABLE ISOTOPES
TRACER TECHNIQUES