... Title : Characterization and Analysis of the CO(2) Laser-Induced Ablation of Lithium Target via Laser-Induced Fluorescence and Absorption ...
DTIC Science & Technology
... MOLECULAR SPECTROSCOPY, LASER INDUCED FLUORESCENCE, MOLECULAR ... ABSORPTION, ATOMIC SPECTROSCOPY, DISSOCIATION ...
Laser-induced fluorescence and phosphorescence as well as infrared and visible absorption spectra of
NASA Technical Reports Server (NTRS)
An analytical solution is presented for the reconstruction of spatially resolved species number densities from spatially resolved laser-induced fluorescence measurements when the integrated absorption of the laser light is known. The stability of the solu...
National Technical Information Service (NTIS)
A two-photon absorption process was used to study resonance ionization spectroscopy of atoms, molecules in the gas phase, laser-induced fluorescence spectra in the condensed phase and laser induced chemical reactions in solutions. 8 refs., 1 fig., 1 tab.
Energy Citations Database
A method and apparatus are disclosed for measuring trace amounts of constituents in samples by using laser induced breakdown spectroscopy and laser induced fluorescence under ambient conditions. The laser induced fluorescence is ...
... Descriptors : *LASER INDUCED FLUORESCENCE, *DIATOMIC MOLECULES ... EXCITATION, THESES, QUENCHING, NITROGEN LASERS. ...
... flash photolysis has been used to study triplet state absorption and fluorescence emission of monomers and dimers of acridine orange and other ...
... Absorption by reacted phenolphthalein provided cross-stream average product thickness and laser induced fluorescence intensity provided the ...
CW lasers were applied to path-integrated absorption measurements of transient shock-tube flows and spatially resolved laser-induced fluorescence ...
NASA Website
... vestigating the application of Laser Induced FLuorescence Spectroscopy (LIFS) ... The fluorescence is observed at 90- to the laser beam, the ...
The present study deals with the study of surface enhanced fluorescence of Tryptophan by Silver Nanoparticles. Absorption and fluorescence studies of Tryptophan with and without Ag-nanoparticles are presented here. Homebuilt Laser Induced Fluorescence (LIF) Spectroscopy ...
NASA Astrophysics Data System (ADS)
The spectroscopic diagnostic technique of two photon absorption laser-induced fluorescence (TALIF) of atomic species has been applied to single-point measurements of velocity and static temperature in the NASA Ames Interaction Heating Facility (IHF) arc j...
... Laser Induced Fluorescence (PLIF) method of measurement of temperature and number density for use in the AEDC Impulse Shock Tunnel Facility. ...
... Accession Number : ADA059083. Title : New Investigation of Nitrogen Laser Induced Fluorescence in Formaldehyde. Spectra ...
... Descriptors : *LASER INDUCED FLUORESCENCE, *ELECTRON BEAMS, ZEEMAN EFFECT, STARK EFFECT, OPTICAL PUMPING, RELATIVITY ...
... Title : Investigation of Laser Induced Fluorescence Spectroscopy for Making In- Situ Species Concentration Measurements in Turbulent ...
Laser Induced Fluorescence (LIF) studies are carried out on nitric oxide and oxygen molecules in the
... Descriptors : *LASER INDUCED FLUORESCENCE, *PENETROMETERS, *CHEMICAL AGENT DETECTORS, FIELD TESTS, HYDROCARBONS ...
... Descriptors : *IMAGE PROCESSING, *FLUORESCENCE, *LASER INDUCED ... PIXELS, ENTHALPY, BLUNT BODIES, SCHLIEREN PHOTOGRAPHY ...
... across the military departments and agencies for Research ... Title : Absorption Calorimetry and Laser Induced Damage Threshold Measurements on ...
The method of laser induced fluorescence used to analyse dissolved organic matter (DOM) in water was discussed. The fluorescence spectrum was normalized by the intensity of Raman scattering for reducing some negative effect induced by the intensity of excitation, the fluorescence ...
PubMed
Optical absorption and emission spectra provide information about the distribution of local atomic environments of rare earths in glass and how they change with glass composition and processing. Laser-induced fluorescence line-narrowed spectra provide add...
The chemical aging of pentaerythritol tetranitrate (PETN) has been and continues to be an important problem in producing and maintaining high energy compounds and components. The work done to date has identified several key concerns in evaluating the chem...
This book discusses the tools and concepts used by practitioners in the field of laser spectroscopy and provides reference material for further study. Resonance photoionization, laser absorption, laser-induced breakdown, photodissociation, Raman scattering, remote sensing, and laser-induced fluorescence are presented.
In this report, we conduct the initial theoretical investigation of emission of radiation by DNA components upon the absorption of infrared (IR) radiation. Excitation wavelengths in 9 and 11 urn region are of interest. These transitions are related to the...
It has been conjectured that atomic oxygen and ozone can have a great influence on the plasma oxidation of ultrathin aluminum for magnetic tunnel junctions. In order to measure the density of O and ozone, two-photon absorption laser induced fluorescence measurements are performed in the dc glow plasma that is used ...
... AND SUBTITLE Laser Induced Asymmetry and Inhomegeneous Broadening of the ... tuned to either of the Doppler broadened hyperfine absorption ...
Mar 14, 2011 ... Home > Georgia Tech Laser-Induced Fluorescence. Georgia Tech Laser-Induced Fluorescence. Operated By: PI. Instrument Type: Fluorescence ...
Aug 4, 2011 ... Georgia Tech Laser-Induced Fluorescence. Operated By: PI. GTLIF inlet 01. Instrument Type: Fluorescence. Measurements: ...
array of laser diodes to excite chlorophyll fluorescence, at a ... fluorescence transient and the rate of fluorescence saturation ...
Spatially resolved laser-induced fluorescence has been used to observe and measure the isotope shift for atomic lithium in the 2/sup 2/Preverse arrow2/sup 2/S transitions. A modified saturated absorption spectrum was also obtained for the ''overlapping'' transitions. The /sup 7/Li-/sup 6/Li isotope ...
High resolution laser induced fluorescence excitation spectra upon absorption in the A1B3u ? X1Ag band of jet-cooled terrylene have been recorded. Precise energies of three vibronic transitions are deduced. Low lying vibrations are found in both electronic states. Rotational constants in ground and excited state ...
The ground state density of xenon atoms has been measured by spatially resolved laser-induced fluorescence spectroscopy with two-photon excitation in the diffusion chamber of a magnetized Helicon plasma. This technique allows the authors to directly measure the relative variations of the xenon atom density without any assumptions. A significant neutral gas ...
Laser induced fluorescence has been used as the basis for a new nondestructive inspection technique. A strong correlation between laser-induced-fluorescence intensity and tensile strength of several polyurethane-based systems has been demonstrated. Variou...
Laser induced fluorescence (LIF) was utilized for the determination of the densities of Ti atoms and ions (Ti+) in a dc magnetron discharge. The densities were measured under different discharge conditions, namely the discharge current, working pressure and distance from the magnetron target. The total density of species in the ...
Direct absorption spectroscopy is used for the measurement of atmospheric OH; autocalibration is achieved by laser induced fluorescence. Measurements by optical absorption present problems concerning the selfproduction of OH, test sensitivity and interact...
Dec 14, 2007 ... Planar Laser-Induced Fluorescence and Particle Imaging Velocimetry Used To Characterize a Baseline Nine-Point Lean Direct Injector for ...
... Title : Planar Laser-Induced Fluorescence Imaging of OH in a Supersonic Combustor Fueled with Ethylene and Methane (Postprint). ...
... Title : OH LIF (Laser-Induced Fluorescence) Temperature Measurements in High Pressure Solid Propellant Flames. Descriptive Note : Interim rept. ...
The paper reports laser-induced fluorescence measurements of the initial product state distributions
... Accession Number : ADA206279. Title : Laser-Induced-Fluorescence Inspection of Polyurethane and Related Materials. Phase 1. ...
... Cathode flow: Anode potential: ... Gain of 188 eV in plume (more than a traditional annular Hall thruster) ... Xenon Laser-Induced Fluorescence: ...
... Accession Number : ADA533434. Title : Laser-Induced Fluorescence Velocity Measurements of a Diverging Cusped Field Thruster. ...
... Title : Laser-Induced Fluorescence Over Optical Fibers for Real Time in Situ Measurement of Petroleum Hydrocarbons in Seawater. ...
... Accession Number : ADA345782. Title : Laser-Induced Fluorescence Measurements of OMS and LR91 Amine Rocket Exhausts. ...
Laser-Induced Fluorescence Measurements and Modeling of Nitric Oxide in Couterflow Diffusion Flames AUTHOR(S): Rayavarapu V. Ravikrishna and Normand M. ...
... Best Available Copy LASER INDUCED IR FLUORESCENCE SPECTRA SOF SIMULANT CHEMICAL THREAT AGENT AND EXHAUST VAPORS ...
... LASER INDUCED FLUORESCENCE OF GROUND STATE HYDROGEN ATOMS IN AN ARCJET PLUME ... LIF on the ground state atoms, other ...
exhibit transparent or reflective properties an innovative laser-induced fluorescence targeting technique has been developed by NASA Langley Research Center ...
... 5. FUNDING NUMBERS Laser induced fluorescence spectroscopy for in-situ detection of petroleum contamination N/A ... of petroleum contamination ...
... Accession Number : ADA348854. Title : Laser Induced Fluorescence Spectroscopy for in-situ Detection of Petroleum Contamination. ...
Laser-induced fluorescence (LIF) has been applied to the quantitative measurement of nitric oxide (NO) in premixed, laminar, high-pressure flames. ...
... The present study was con- ducted to determine the feasibility of using laser-induced fluorescence (LIF) to monitor gum concentration in jet fuel. ...
... Accession Number : ADA252685. Title : Laser Induced Fluorescence Detection of Gums in Jet Fuels. Descriptive Note : Final rept. ...
... Title : LASER INDUCED FLUORESCENCE AND ENVIRONMENTAL SENSING (LIFES), IN: NASA-SP-375, P153-169. Corporate ...
Laser-induced damage in transparent dielectrics leads to the formation of laser-modified material as a result of exposure to extreme localized temperatures and pressures. In this work, we used an infrared thermal imaging system in combination with a fluorescence microscope to map the dynamics of the local surface temperature and ...
... Accession Number : ADD854771. Title : Laser-Induced Damage and Two-Photon Absorption Measurements in CdTe. Descriptive ...
... Accession Number : ADD255887. Title : Laser-Induced Damage and Two-Photon Absorption Measurements in CdTe. Descriptive ...
