Multiphoton laser-induced fluorescence studies of simple species
Recent studies have demonstrated multiple-photon excitation of atomic species. Bischel and coworkers have provided a detailed description of two-photon excitation fluorescence in the detection of atoms generated in a low pressure discharge and its possible application as a diagnostic tool in flame and plasmas. It is also believed that such techniques can be useful in detecting molecular transients which are difficult to detect otherwise as demonstrated in two-photon laser-induced fluorescence (LIF) detection of NO. In this paper, recent two-photon LIF studies on I and Br atoms are discussed, which are produced via laser photolysis of molecular precursors. The two-photon LIF study of HS and DS radicals is presented as a test case for the detection of other important radical species such as C/sub 2/H and CH/sub 3/, which are currently being investigated in the laboratory. In addition, excitation of three-photon resonances of I/sub 2/, N/sub 2/, and H/sub 2/ is discussed.
- Research Organization:
- Los Alamos National Lab., NM
- OSTI ID:
- 6685288
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. 380; Conference: Los Alamos conference on optics '83, Los Alamos, NM, USA, 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
DEUTERIUM COMPOUNDS
EXCITATION
HYDROGEN SULFIDES
IODINE
ATOMS
BROMINE
EMISSION SPECTRA
EXPERIMENTAL DATA
FLUORESCENCE
FORBIDDEN TRANSITIONS
HYDROGEN
LASERS
MOLECULES
MULTI-PHOTON PROCESSES
NITROGEN
PHOTOLYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DECOMPOSITION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
HALOGENS
HYDROGEN COMPOUNDS
INFORMATION
LUMINESCENCE
NONMETALS
NUMERICAL DATA
PHOTOCHEMICAL REACTIONS
SPECTRA
SULFIDES
SULFUR COMPOUNDS
400203* - Isotope Exchange & Isotope Separation- (-1987)
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory