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Laser Induced Fluorescence Gas Puff Density Measurements
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Book Synopsis Laser Induced Fluorescence Gas Puff Density Measurements by : Matthew Thomas Evans
Download or read book Laser Induced Fluorescence Gas Puff Density Measurements written by Matthew Thomas Evans and published by . This book was released on 2012 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The double gas puff valve is a device used to inject a supersonic puff of gas to act as a load in z-pinch plasma implosions. The purpose of the annular gas shells is to mimic a cylindrical column along the z-axis in efforts to reduce Rayleigh-Taylor instability. However before integration of the valve into the zpinch pulsed power machine the gas profile needs to be examined. Tuning the density of the gas to fit specific profiles leads to improvement in plasma radiative sources and yields. The axial uniformity of the cylindrical gas column is highly dependent on the nozzle characteristics and shape. Performance is then determined by the density, speed, and symmetry of the gas column. Measurement of the density distribution is performed using a spectroscopic measuring technique called laser-induced fluorescence. LIF is a 1-dimensional imaging technique that maps the concentration of atoms with the aid of a tracer. LIF and the 2-dimensional counterpart planar laser-induced fluorescence (PLIF) examine the gas flow in the r-z plane with sub-millimeter resolution. The tracer molecule fluoresces due to excitation by a laser beam. The fluorescence signal is imaged using a streak camera and a charge-coupled-device (CCD) in combination. The method also allows the study of gas puff reliability. Any differences between gas shells can then be examined and interpreted with reliable certainty. Imaging software is used to determine the density from the intensity of the fluorescence images. A detail account of the process is illustrated in this study. A control system was constructed for operations of the gas puff valve in both LIF and z-pinch experiments. The pressure system is designed to tailor specific profiles as needed. The LIF system is detailed along with any components built for the gas puff valve. Results of these measurements serve to verify the uniformity of flow and determine the density distribution of the gas puff.
Book Synopsis Measurement of Gas Density and Temperature Profiles in UF6 Using Laser Induced Fluorescence by :
Download or read book Measurement of Gas Density and Temperature Profiles in UF6 Using Laser Induced Fluorescence written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser induced fluorescence (LIF) can be used to determine the pressure and temperature of an UF6 gas sample. An external pulsed laser is used to excite the gas and a multichannel fiber optics system simultaneously collects fluorescence signals emanating from a number of points in the gas. The signals are digitized and presented to a minicomputer for data reduction. Both fluorescence intensity and lifetime are used to deduce temperature and pressure. The LIF probe system is described. Analysis of the data is discussed, and representative results are presented.
Book Synopsis Measurement of Gas Density and Temperature Distributions in Strongly Rotating UF6 Using Laser-induced Fluorescence by :
Download or read book Measurement of Gas Density and Temperature Distributions in Strongly Rotating UF6 Using Laser-induced Fluorescence written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new technique for using Laser Induced Fluorescence (LIF) signals to measure the distribution of gas density and temperature in strongly rotating UF6 gas is presented. An external pulsed laser is used to excite the rotating UF6 gas, producing an exponentially decaying fluorescence signal. A multi-channel fiber optics system simultaneously collects the fluorescence signals emanating from a number of points in the gas. The signals from each optical channel are digitized and processed to determine the fluorescence signal intensity and decay lifetime at each of the points of observation by means of a least squares fitting process. Gas densities and temperatures are then determined from the intensity and lifetime data. A recently constructed LIF probe system is described and an analysis of the unfolding techniques necessary to process the signal data is presented. Preliminary data, obtained in tests of the probe system in a laboratory rotor, are presented.
Book Synopsis Optical Measurements of Fluctuating Temperatures in a Supersonic Turbulent Flow Using One- and Two-photon, Laser-induced Fluorescence by :
Download or read book Optical Measurements of Fluctuating Temperatures in a Supersonic Turbulent Flow Using One- and Two-photon, Laser-induced Fluorescence written by and published by . This book was released on 1984 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Fluorescence Measurements of Thermal and Statistical Properties of a Gas Using Optically Pumped Sodium Vapor by : Christopher Calvin Dobson
Download or read book Laser Induced Fluorescence Measurements of Thermal and Statistical Properties of a Gas Using Optically Pumped Sodium Vapor written by Christopher Calvin Dobson and published by . This book was released on 1998 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Assessment and Enhancement of Planar Laser-Induced Fluorescence Measurements of Nitric Oxide in an Inverse Diffusion Flame by :
Download or read book Experimental Assessment and Enhancement of Planar Laser-Induced Fluorescence Measurements of Nitric Oxide in an Inverse Diffusion Flame written by and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reply to Strictures on Fessenden's Essay on the Law of Patents for New Inventions by :
Download or read book Reply to Strictures on Fessenden's Essay on the Law of Patents for New Inventions written by and published by . This book was released on 1824 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mixing Measurements Using Laser Induced Fluorescence by : Jonathan R. Coppeta
Download or read book Mixing Measurements Using Laser Induced Fluorescence written by Jonathan R. Coppeta and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Fluorescence Studies in the Gas Phase by : Christopher Guy Atkins
Download or read book Laser Induced Fluorescence Studies in the Gas Phase written by Christopher Guy Atkins and published by . This book was released on 1986 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Quantitative Study of the Feasibility of Oxygen Laser Induced Fluorescence for Engineering Gas Temperature Measurements by : Ismail Ceyhan
Download or read book A Quantitative Study of the Feasibility of Oxygen Laser Induced Fluorescence for Engineering Gas Temperature Measurements written by Ismail Ceyhan and published by . This book was released on 1997 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-induced Fluorescence Measurements of Dual Plumes and Comparison of Laser-induced Fluorescence and Conductivity Probe Measurements by : Joseph Coleman Chrzan
Download or read book Laser-induced Fluorescence Measurements of Dual Plumes and Comparison of Laser-induced Fluorescence and Conductivity Probe Measurements written by Joseph Coleman Chrzan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The laser-induced fluorescence (LIF) technique is used to visualize and quantify the concentration field around a conductivity probe. The LIF data are compared to the signal collected by the conductivity probe. The objective is to compare the signal of the contact-sensor to the "ground-truth" measurement of the LIF data. Detailed comparison of the temporal response and the peak detection are presented. In addition, a proof-of-concept of a two-color LIF technique is presented using Rhodamine 6G paired with an Argon-ion laser and simultaneously Oxazine 725 paired with a Krypton-ion laser. Optical filters on two digital cameras isolate the emitted light from these respective laser/dye combinations. The objective is to provide detailed quantitation of two over-lapping (non-reactive)chemical plumes.
Book Synopsis Single-pulse Gas Thermometry at Low Temperatures Using Two-photon Laser-induced Fluorescence in NO/N2 Mixtures by :
Download or read book Single-pulse Gas Thermometry at Low Temperatures Using Two-photon Laser-induced Fluorescence in NO/N2 Mixtures written by and published by . This book was released on 1983 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature Measurements in Gases Using Planar Laser-induced Fluorescence Imaging of NO and O2 by : Michael Poliang Lee
Download or read book Temperature Measurements in Gases Using Planar Laser-induced Fluorescence Imaging of NO and O2 written by Michael Poliang Lee and published by . This book was released on 1991 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three techniques based on Planar Laser-Induced Fluorescence (PLIF) have been developed for the measurement of 2-D temperature fields in gaseous flows. The methods are applicable to a wide range of aerodynamic and combustion flows.
Book Synopsis Temperature Measurements in a Flow Using Laser Induced Fluorescence of Oxygen by : Franck Kolczak
Download or read book Temperature Measurements in a Flow Using Laser Induced Fluorescence of Oxygen written by Franck Kolczak and published by . This book was released on 1992 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Measurements and Analysis of Ambient Gas Entrainment Into Intermittent Gas Jets by Laser-induced Fluorescence of Ambient Gas (LIFA) by : Akihiro Kido
Download or read book Quantitative Measurements and Analysis of Ambient Gas Entrainment Into Intermittent Gas Jets by Laser-induced Fluorescence of Ambient Gas (LIFA) written by Akihiro Kido and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-induced Fluorescence as a Method for the Determination of Component Concentrations in Tissue by : Rajiv Suri
Download or read book Laser-induced Fluorescence as a Method for the Determination of Component Concentrations in Tissue written by Rajiv Suri and published by . This book was released on 1993 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Influence of Spectral Filters Upon the Measurement of Laser Induced Fluorescence Decay Times by : George S. West-Vukovich
Download or read book A Study of the Influence of Spectral Filters Upon the Measurement of Laser Induced Fluorescence Decay Times written by George S. West-Vukovich and published by . This book was released on 1976 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
