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Vapours
About: Vapours is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 15022 citations.
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TL;DR: In this article, a transferred arc was operated with a current intensity of 90 A, an arc length of 18 mm, and a gas flow rate of. Temperature and relative iron concentration profiles determined experimentally were compared to theoretical values obtained from a two-dimensional model based on mass, momentum, and energy conservation equations and taking into account anode erosion.
Abstract: Spectroscopic measurements have been made on a transferred arc burning in pure argon at atmospheric pressure seeded with iron vapours arising from the anode erosion. The transferred arc was operated with a current intensity of 90 A, an arc length of 18 mm, and a gas flow rate of . Temperature and relative iron concentration profiles determined experimentally were compared to theoretical values obtained from a two-dimensional model based on mass, momentum, and energy conservation equations and taking into account anode erosion. This comparison partially validated the model and showed that the presence of iron vapours, with a relative concentration of about 0.1%, led to a temperature decrease of about 1000 K. Differences between experimental and calculated temperature fields may be due to departures from equilibrium and to uncertainties about the iron vapour concentration and the radiative losses.
34 citations
TL;DR: In this paper, a laboratory test was developed to simulate the sodium gaseous corrosion of different raw materials and refractories, and the experimental results were in agreement with thermodynamic calculations.
34 citations
TL;DR: In this paper, the role of solvent vapour in thin-layer chromatography (TLC) was investigated and the results indicate that the influence of vapours can be a valuable factor in improving TLC separations.
34 citations
CERN1
01 May 1989-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this paper, the light emission from avalanches in parallel-plate chambers, filled with noble gases and with TEA, TMAE, and H2O vapours at a total pressure p = 1 atm under the condition of low gas gain, has been investigated.
Abstract: The light emission from avalanches in parallel-plate chambers, filled with noble gases and with TEA, TMAE, and H2O vapours at a total pressure p = 1 atm under the condition of low gas gain, has been investigated. Three important results have been obtained. 1. (1)|At partial pressures of more than a few Torr, and for a given charge gain, the light output from TEA, TMAE, and H2O in the spectral region 200–700 nm is much higher than from all other common quenching gases. 2. (2)|For these vapours, the ratio of light to charge is independent of their concentration when their partial pressure is more than a few Torr. 3. (3)|The best energy resolution achieved with the light-emitting chamber is ∼18% for 5.9 keV. Qualitative models explaining these results are given.
34 citations
TL;DR: In this paper, a semi-implicit finite difference (SDF) scheme was used to predict the adsorption of binary vapour mixtures from air by active carbon beds.
33 citations