Flowing afterglow

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WebJun 28, 2000 · The flowing afterglow of a microwave discharge can be used to efficiently inactivate bacterial spores. We have conducted a parametric study of the operating conditions of such a system, which shows that the species participating in the killing of spores are oxygen atoms and ultraviolet (UV) photons. The oxygen atoms and the … WebMay 4, 2006 · We present the optimization of a sterilization process with a N 2 flowing afterglow post-discharge. First we study the inactivation of bacteria (E. coli) submitted to …

Afterglow Encyclopedia.com

Flowing-afterglow mass spectrometry (FA-MS), is an analytical chemistry technique for the sensitive detection of trace gases. Trace gas molecules are ionized by the production and flow of thermalized hydrated hydronium cluster ions in a plasma afterglow of helium or argon carrier gas along a flow tube … See more Over the years many variations of the instrument have been made. In the beginning during the 1960s there was the study of flowing afterglow plasma. This study was done by Eldon Ferguson, Art Schmeltekopf and … See more Trace gas analysis One of the first papers reporting the use of the flowing afterglow studied ion-molecule reactions pertinent to the Martian atmosphere. This flowing afterglow technique replaced the then standard stationary afterglow … See more • Charles H. DePuy (chemist) • Robert R. Squires See more WebMar 20, 2024 · The appearance of a flowing afterglow with a dip in light emission followed by a maximum, as shown in Fig. 3, is in close resemblance of the data reported on the … chinchilla iron works

Flowing Afterglow Measurements of Ion-Neutral Reactions

WebOct 28, 2013 · In this work, the reaction kinetics in argon flowing afterglow with nitrogen addition was studied by optical emission spectroscopy. The DC flowing post-discharge in pure argon was created in quartz tube at the total gas pressure of 1000 Pa and discharge power of 60 W. The nitrogen was added into the afterglow at the distance of 9 cm … WebAbstract. The experimental technology of the flowing afterglow technique, including data analysis procedures, has very recently been described in great detail. (1) The present discussion will center on some recent results and their implications for increasing our understanding of ion-neutral reaction processes. A flowing afterglow is an ion source that is used to create ions in a flow of inert gas, typically helium or argon. Flowing afterglow ion sources usually consist of a dielectric discharge that gases are channeled through to be excited and thus made into plasma. Flowing afterglow ion sources can be coupled with a selected-ion flow-tube for selection of reactant ions. When this ion source is coupled with mass spectrometry it is referred to as flowing afterglow mass spectrometry. chinchilla in english

Study of argon–oxygen flowing afterglow - IOPscience

WebAbstract. The experimental technology of the flowing afterglow technique, including data analysis procedures, has very recently been described in great detail. (1) The present … WebA flowing afterglow system has been used to measure the gas-phase, thermal-energy rate constants for reactions between a variety of ions and water-vapour molecules at 300K. A … grand blanc apartment complexesWebJun 28, 2000 · The flowing afterglow of a microwave discharge can be used to efficiently inactivate bacterial spores. We have conducted a parametric study of the operating … chinchilla in spanish

"WebApr 6, 2016 · The flowing configuration of argon DC discharge with oxygen admixture was used for this experimental study. The experimental set-up was already used for our … " - Flowing afterglow

Flowing afterglow

Webthe afterglow, besides a low gas temperature ~ensured by a high enough gas ﬂow !, can be summarized by considering the following points: ~1! under direct plasma exposure, in WebJan 1, 1992 · @article{osti_7235675, title = {A flowing afterglow study of gas-phase carbene thermochemistry}, author = {Paulino, J A}, abstractNote = {The research discussed in this thesis pertains to the thermochemistry of carbenes, and the structure and reactivity of gas-phase halogenated carbanions. The heats of formation of several carbenes have …

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WebThe observed pressure dependences indicate that the recombination process in H3 + dominated plasma can at higher pressure (order of several hundreds pascals) proceeds via a three-body mechanism. Recombination of H3 + ions with electrons was studied in Flowing Afterglow (FALP) experiment at T = 250 K and buffer gas pressure 1500-1600 Pa. In … WebA flowing afterglow system has been used to measure the gas-phase, thermal-energy rate constants for reactions between a variety of ions and water-vapour molecules at 300K. A method of measuring water-vapour flow-rates has been developed which may be readily extended to other vapours. Rate constants, together with

WebFlowing afterglow mass spectrometry, FA-MS, is a sensitive and quantitative mass spectrometry analytical approach that offers a route to on-line, real-time deuterium abundance measurements in water vapour in breath and above aqueous liquids, including urine and serum. This method involves the production and flow of thermalised hydrated … WebThe synthesis and characterization of carbene, nitrene, carbyne and biradical negative ions were studied using the flowing afterglow-triple quadrupole apparatus. These include the negative ions of phenylcarbene, 3-ethoxyphenylnitrene, phenylcarbyne and 2,4-dimethylenecyclobutane-1,3-diyl, respectively. Various experimental gas-phase acidities, …

WebThe flowing afterglow has many attractive aspects: well-understood laminar behavior, viscous gas flow, a large density of carrier gas which allows the study of thermalized … WebThis thesis describes the detailed design of the Tandem Flowing Afterglow-SIFT-Drift and applications of this technique and other flow tube techniques to gas phase ion chemistry. The versatile ion source and high sensitivity and resolution of the instrument allows generation and study of a variety of ions including highly reactive ions (CH/sub ...

Webafterglow: [noun] a glow remaining where a light has disappeared.

WebJul 1, 1995 · @article{osti_223681, title = {Kinetics of chemical reactions of methane in the flowing afterglow of a dinitrogen microwave plasma}, author = {Legrand, J C and Diamy, A M and Hrach, R}, abstractNote = {The reaction of methane in the afterglow is studied by combination of computer experiments and direct measurements. Methane conversion is … grand blanc festival 2016WebPublisher Summary. This chapter describes the experimental and analytical techniques that have been developed for flowing afterglow applications to the quantitative study of … chinchilla how muchWebApr 14, 2024 · Get FLOW feat.Afterglow setlists - view them, share them, discuss them with other FLOW feat.Afterglow fans for free on setlist.fm! grand blanc eyesWebHere, the atmospheric-pressure glow discharge (APGD) and afterglow of a helium flowing atmospheric-pressure afterglow (FAPA) ionization source were examined by optical … chinchilla information sheetWebApr 1, 2004 · Gas-phase reactions of nitromethane (1), nitroethane (2), 2-nitropropane (3), 2-methyl-2-nitropropane (4) and nitrocyclopropane (5) were studied at 300 K using the … grand blanc health departmentWebJanča J, Tálský A, Krčma F, Hochard L and Ricard A (1994) CN chemiluminescence in N2 + CH4 Flowing afterglow at low temperatures, Plasma Chemistry and Plasma Processing, 10.1007/BF01447078, 14:3, ... Thrush B (1968) Atom Reactions in Discharge-Flow Systems Chemische Elementarprozesse, ... chinchilla is a project from deepmindWebMay 4, 2006 · We present the optimization of a sterilization process with a N 2 flowing afterglow post-discharge. First we study the inactivation of bacteria (E. coli) submitted to the post-discharge, and discuss the mechanisms of bacteria inactivation. Then we evaluate the volume repartition of the active species (N atoms produced by plasma discharge) in ... chinchilla interesting facts