منابع مشابه
Simple pressure gauge for uranium hexafluoride.
A sensitive detector and pressure gauge for uranium hexafluoride in high-vacuum systems is described. Negative surface ionization of UF(6) occurs on ribbon filaments operated at temperatures too low for electron emission to be significant. The ion current measured on a cylindrical collector surrounding the filament assembly varies regularly with UF(6) pressure below 10(-3) Torr. Different filam...
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A new model for the vapor phase of a pressurized liquid called "the cluster model: which is originally introduced in this work, along with an accurate equation of state for the liquid phase called the LIR, is used to derive an accurate equation for the vapor pressure of liquid as a function of external pressure. The chemical Potential of both phase have been found to be in good agreement wi...
متن کاملA New Vapor Pressure Equation
The Wagner equation for prediction of vapor pressure has been modified in order to improve it accuracy. On the basis of this modifications, development of a new equation for prediction of vapor pressure is outlined. Examples of the use of the equation for obtaining vapor pressure for a total of 94 pure substance are given. The proposed equation combines simplicity and accuracy and performs as w...
متن کاملGas-Phase Reactions of Bare and Ligated Uranium Ions with Sulfur Hexafluoride
Reactions of bare and ligated uranium ions with sulfur hexafluoride were studied in a quadrupole ion trap mass spectrometer. Bare U+ was found to react rather efficiently with SF6 (k/kADO ∼ 0.4) to produce both UFn (n ) 1, 2, 3, 4) and SFn (n ) 1, 2, 3). Whereas the UF/SF6 reaction rate was essentially the same as that for U/SF6, both UF2 and UF3 were inert; this is attributed to a repulsive in...
متن کاملPrediction of the Liquid Vapor Pressure Using the Artificial Neural Network-Group Contribution Method
In this paper, vapor pressure for pure compounds is estimated using the Artificial Neural Networks and a simple Group Contribution Method (ANN–GCM). For model comprehensiveness, materials were chosen from various families. Most of materials are from 12 families. Vapor pressure data of 100 compounds is used to train, validate and test the ANN-GCM model. Va...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 1948
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.1746915