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Flowing afterglow

Webadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A 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 …

Flowing Afterglow Study of Pressure Dependence of …

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 … 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 tsconfig typeroots https://importkombiexport.com

Physics:Flowing-afterglow mass spectrometry - HandWiki

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 WebMay 23, 2024 · Afterglow. Afterglow can be defined as a blissful period of mental and physical relaxation after orgasm during which a person enjoys the rush of endorphins … 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 … tsconfig tsx

Using the flowing afterglow of a plasma to inactivate

Category:Flowing Atmospheric Pressure Afterglow for Ambient Ionization: …

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Flowing afterglow

A flowing afterglow study of water vapour - Faraday Discussions …

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

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WebJul 27, 2024 · Here, a reactive flowing atmospheric-pressure afterglow (reactive-FAPA) AMS source is developed for rapid isomer differentiation by derivatization of analytes in real time. The effects of the reactive-FAPA operating conditions on the reagent and product ions were studied and optimized for highly volatile and non-volatile model compounds with ... WebJun 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 …

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 ... 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 …

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 ...

WebAug 31, 1998 · Flowing afterglow and selected ion flow tube studies of thermal energy electron transfer reactions of sulfur dioxide provide a bracket of the electron affinity of SO 2: 0.744 eV

WebPublisher Summary. This chapter describes the experimental and analytical techniques that have been developed for flowing afterglow applications to the quantitative study of … philly vs pittsburgh livingWebAbstract. The experimental technology of the flowing afterglow technique, including data analysis procedures, has very recently been described in great detail. (1) The present … tsconfig type moduleWebApr 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 previous studies of argon afterglow with nitrogen admixture [] and nitrogen afterglow with mercury vapor admixture [].A simplified schematic drawing of the experimental set-up is given in … tsconfig unexpected token fixWebHere, the atmospheric-pressure glow discharge (APGD) and afterglow of a helium flowing atmospheric-pressure afterglow (FAPA) ionization source were examined by optical … tsconfig typingsWebMay 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 … philly vs pittsburgh sizeWebSpectroscopy 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 … tsconfig victronWebApr 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 … tsconfig unused imports