Flowing afterglow
WebNov 1, 1994 · @article{osti_6937332, title = {Langmuir-probe measurements in flowing-afterglow plasmas}, author = {Johnsen, R and Shun'ko, E V and Gougousi, T and Golde, M F}, abstractNote = {The validity of the orbital-motion theory for cylindrical Langmuir probes immersed in flowing-afterglow plasmas is investigated experimentally. It is found that … 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 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 ...
Flowing afterglow
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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 WebAbstract. The experimental technology of the flowing afterglow technique, including data analysis procedures, has very recently been described in great detail. (1) The present …
WebApr 20, 2024 · We describe the plasma chemistry in a helium flowing atmospheric pressure afterglow (FAPA) used for analytical spectrometry, by means of a quasi-one … 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 …
WebSpectroscopy has been an important tool in studies of dissociative recombination (DR) for many years. The early work by Biondi1 and coworkers established the dissociative nature of the process by demonstrating the Doppler broadening of spectral lines due to the momentum that is imparted to the separating recombination fragments. In more recent … WebApr 20, 2024 · We describe the plasma chemistry in a helium flowing atmospheric pressure afterglow (FAPA) used for analytical spectrometry, by means of a quasi-one-dimensional (1D) plasma chemical kinetics model. We study the effect of typical impurities present in the feed gas, as well as the afterglow in ambient humid air. The model provides the species …
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 …
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 … sondra schneider cyber securityWebA 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 … sondra ray booksWebApr 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 … small dining table behind sofaWebJun 8, 2024 · Flowing atmospheric-pressure afterglow plasma gas flow rate The signal dependence on the plasma gas flow rate was also studied ( Fig. 3 b). Regarding the gas-phase analyte injection, 2,6-DTBP, there is a considerable increase (around 11 times) in signal intensity as the plasma gas flow rate rises from 100 to 300 mL min −1 , that is … sondra sectionalWebThe 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, … sondra radvanovsky net worthWebJul 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 … sondra on cosby showWebAbstract. 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. sondra ray india