Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Development Of A Two Photon Laser Induced Fluorescence Sensor For The Detection Of Atmospheric Oh Radicals
Download Development Of A Two Photon Laser Induced Fluorescence Sensor For The Detection Of Atmospheric Oh Radicals full books in PDF, epub, and Kindle. Read online Development Of A Two Photon Laser Induced Fluorescence Sensor For The Detection Of Atmospheric Oh Radicals ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Development of a Two-photon/laser Induced Fluorescence Sensor for the Detection of Atmospheric OH Radicals by : John David Bradshaw
Download or read book Development of a Two-photon/laser Induced Fluorescence Sensor for the Detection of Atmospheric OH Radicals written by John David Bradshaw and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Two Photon/laser Induced Fluorescence Technique for the Detection of Atmospheric OH Radicals by : John Bradshaw
Download or read book Development of a Two Photon/laser Induced Fluorescence Technique for the Detection of Atmospheric OH Radicals written by John Bradshaw and published by . This book was released on 1990 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Reactions of Hydroxyl Radicals with Oxygenated Hydrocarbons in the Gas Phase: A Laser Photolysis/Laser-Induced Fluorescence Study by : Cornelie Bänsch
Download or read book Reactions of Hydroxyl Radicals with Oxygenated Hydrocarbons in the Gas Phase: A Laser Photolysis/Laser-Induced Fluorescence Study written by Cornelie Bänsch and published by Logos Verlag Berlin GmbH. This book was released on 2017 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydroxyl radicals (OH) play a key role in ignition processes and in the atmosphere. Thus, the detailed knowledge of the kinetics of OH reactions is crucial in combustion and atmospheric research. In this work, an experimental approach for time-resolved studies of OH radical reactions at high pressures with pulsed laser photolysis/laser-induced fluorescence was revised and the reactions of dimethyl ether, diethyl ether, and dimethoxymethane with OH radicals were investigated in detail. The results reveal a deeper insight into the reaction processes of ether compounds with OH in general, contributing to a better understanding of the combustion of different biofuels and fuel additives.
Book Synopsis Curricula in the Atmospheric, Oceanic and Related Sciences by :
Download or read book Curricula in the Atmospheric, Oceanic and Related Sciences written by and published by . This book was released on 1988 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-Induced Fluorescence of Hydroxyl (OH) Radical in Cold Atmospheric Discharges by : Jan Voráč
Download or read book Laser-Induced Fluorescence of Hydroxyl (OH) Radical in Cold Atmospheric Discharges written by Jan Voráč and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of laser-induced fluorescence (LIF) to measurement of absolute concentration of hydroxyl radicals in cold atmospheric discharges is described. Though only the case of OH is presented, the method can be directly applied to other molecules as well. Starting from the rate equations for the LIF process, the main formulas for two- and multi-level excitation scheme are derived. It is also shown how to use partially saturated LIF in practice, enhancing the signal-to-noise ratio. Practical tips for automating the data evaluation are given, allowing processing large data sets, particularly suitable for planar measurements. Gas temperature estimation from fluorescence on different rotational absorption lines is shown as an attractive method for obtaining temperature maps with high spatial resolution. The important aspects of calibration are discussed, particularly the overlap of the laser line with the selected absorption line and the measurement of the Rayleigh scattering for sensitivity calibration, together with the common sources of errors. The application of OH(A, v' = 0 ← X, v" = 0) excitation scheme to the effluent of atmospheric pressure plasma jet ignited in argon and of OH(A, v' = 1 ← X, v" = 0) to the plasma of coplanar surface barrier discharge in air and in water vapor is shown.
Book Synopsis Kinetic Study of Reactions with Interest to Atmospheric Chemistry by Simultaneous Detection of OH and RO2 Radicals Coupled to Laser Photolysis by : Emmanuel Assaf
Download or read book Kinetic Study of Reactions with Interest to Atmospheric Chemistry by Simultaneous Detection of OH and RO2 Radicals Coupled to Laser Photolysis written by Emmanuel Assaf and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hydroxyl radical OH and hydroperoxy radical HO2 radicals are key species in many oxidation processes in the atmosphere. The degradation of volatile organic compounds under tropospheric conditions is induced by reactions with hydroxyl radicals followed by the subsequent chemistry of the initial OH oxidation products with O2. This thesis was focused on the kinetic study of some of these atmospherically relevant reactions to better understand their oxidation mechanisms using an experimental system of laser photolysis coupled to Laser Induced Fluorescence (LIF, for OH radical) and continuous-wave Cavity Ring-Down Spectroscopy (cw-CRDS, for OH, HO2 and RO2 radicals) detection techniques. After determining the infrared spectrum of OH, HO2 and CH3O2 radicals in the near infrared region and the absorption cross-sections of few selected lines, four systems were studied with the above mentioned techniques: CH3O2 + OH, C2H5O2 + OH, C3H7O2 + OH and C4H9O2 + OH. The rate constant and the HO2 yield of the four reactions were determined. In addition, the rate constants of few secondary reactions such as CH3O + HO2, CH3O + CH3O or OH + HO2 have been determined.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1987 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Oxidation Capacity of the Atmosphere - OH and HO 2 Radical Measurements in a Boreal Forest Environment Using Laser Induced Fluorescence Spectroscopy by : Korbinian Hens
Download or read book The Oxidation Capacity of the Atmosphere - OH and HO 2 Radical Measurements in a Boreal Forest Environment Using Laser Induced Fluorescence Spectroscopy written by Korbinian Hens and published by . This book was released on 2014 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Imaging Radical Species in Reacting Flows Using Picosecond Two-Photon Laser-Induced Fluorescence Spectroscopy by :
Download or read book Imaging Radical Species in Reacting Flows Using Picosecond Two-Photon Laser-Induced Fluorescence Spectroscopy written by and published by . This book was released on 2006 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AMS Newsletter by : American Meteorological Society
Download or read book AMS Newsletter written by American Meteorological Society and published by . This book was released on 1983 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Fiber-laser-based Laser-induced Fluorescence for Detection of SO2 by :
Download or read book Development of Fiber-laser-based Laser-induced Fluorescence for Detection of SO2 written by and published by . This book was released on 1998 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gaining a quantitative understanding of many aspects of the earth's climate system requires development of new detection methods for key atmospheric species and their incorporation into chemical sensors with high sensitivity, specificity, and time response. The authors have initiated a research program to develop these new chemical-sensing capabilities. The species they have targeted initially are oxides of nitrogen and sulfur, specifically NO and S02 These molecules play a central role in the earth's climate, and anthropogenic activities (primarily fossil-fuel combustion) are the dominant source of both species. They are exploring the use of single-mode fiber lasers and amplifiers as compact, lightweight sources of tunable, narrow-bandwidth, deep-UV radiation. They have also begun spectroscopic studies to optimize UV laser-induced fluorescence for detection of S02 with high sensitivity and specificity.
Book Synopsis Multiphoton Laser-induced-fluorescence Studies of Simple Species by :
Download or read book Multiphoton Laser-induced-fluorescence Studies of Simple Species written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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, we discuss our recent two-photon LIF studies on I and Br atoms, 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 C2H and CH3, which are currently being investigated in our laboratory. In addition, excitation of three-photon resonances of I2, N2, and H2 is discussed.
Book Synopsis A Novel Approach to Measurement of Atmospheric NO3 and N2O5 by : Ezra Cornelius Wood
Download or read book A Novel Approach to Measurement of Atmospheric NO3 and N2O5 written by Ezra Cornelius Wood and published by . This book was released on 2004 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrashort Two-photon-absorption Laser-induced Fluorescence in Nanosecond-duration, Repetitively Pulsed Discharges by : Jacob Brian Schmidt
Download or read book Ultrashort Two-photon-absorption Laser-induced Fluorescence in Nanosecond-duration, Repetitively Pulsed Discharges written by Jacob Brian Schmidt and published by . This book was released on 2015 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finally, the fs-TALIF diagnostic is used in an atmospheric-pressure combustion environment, where plasma-assisted combustion (PAC) is used to augment flame characteristics. Fs-TALIF measurements of atomic hydrogen and oxygen are compared with hydroxyl radical number densities obtained with ns laser-induced fluorescence (LIF) measurements, to understand OH production mechanisms in the discharge occurring in the hot, downstream products of a premixed hydrocarbon/air flame. The fs-TALIF diagnostic provides fluorescence measurements more accurately from the PAC-produced atomic species, due to simultaneous measurement of quenching rates and reduced photolytic production in the hydrocarbon flames.
Book Synopsis Laser Induced Fluorescence Study of the Heterogeneous Interaction of Polycyclic Aromatic Hydrocarbons with Aqueous Surfaces [microform] : Adsorption and Reaction with Gas-phase Ozone by : Baagi Thema Mmereki
Download or read book Laser Induced Fluorescence Study of the Heterogeneous Interaction of Polycyclic Aromatic Hydrocarbons with Aqueous Surfaces [microform] : Adsorption and Reaction with Gas-phase Ozone written by Baagi Thema Mmereki and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have also measured the kinetics and products of a reaction between gas-phase ozone and anthracene adsorbed at the air-aqueous interface. The reactions at the "uncoated" air-water interface and at an interface consisting of a monolayer of various organic compounds were studied. In all the cases, the reaction follows a Langmuir-Hinshelwood mechanism, in which ozone first adsorbs to the air-aqueous interface, and then reacts with adsorbed anthracene. For typical atmospheric ozone concentrations, the estimated reactive uptake coefficient ranges from 2 x 10-8 to 3 x 10-7 depending on the nature of the air-aqueous interface. Smaller (C4, C6) carboxylic acids at the interface inhibit the reaction (compared to the "clean" water surface); 1-octanol enhances it. Under some circumstances, oxidation by ozone on aqueous surfaces may be more important in the atmosphere than gas phase oxidation by OH radicals. The fate of atmospheric semi-volatile organic compounds (SOCs) such as polycyclic aromatic hydrocarbons (PAHs) depends, in part, on their distribution between the gas phase and particulate phases, and oxidation reactions. In the daytime troposphere, photochemically produced OH radicals dominate these reactions, whereas chlorine atoms may contribute to the oxidation of certain PAHs in coastal areas. In the dark, oxidation by nitrate radicals (NO3) may also be important, whereas ozone can contribute to the oxidation both during the day and at night. We have developed a laser-induced fluorescence (LIF) method to study adsorption and oxidation of PAHs at the air-aqueous interface. This method allows to directly probe the mechanisms and extent of PAH uptake on aqueous surfaces. The kinetics of the adsorption of anthracene and pyrene onto "pure" water and water coated with an organic film were measured. The surface uptake coefficients of both PAHs are estimated to be on the order of 10-5, and increase by a factor of 2--3 for uptake to the 1-octanol coated water surface. However, the surface uptake of pyrene to a hexanoic-acid-coated aqueous surface does not display this enhancement. Resolved fluorescence spectra of pyrene adsorbed onto 1-octanol-coated surfaces indicate that pyrene is in a less polar environment than when adsorbed at the hexanoic-acid-coated surfaces.
![Download Laser Induced Fluorescence Study of the Heterogeneous Interaction of Polycyclic Aromatic Hydrocarbons with Aqueous Surfaces [microform] : Adsorption and Reaction with Gas-phase Ozone PDF Online Free](https://books.google.com/books/content/images/frontcover/PR2GtgAACAAJ?fife=w200-h370)
