scholarly journals Graphic Dependences for Determination of Temperature and Electric Field Strength in Arc Discharge

Author(s):  
Evgeniy N. Vasil’ev ◽  
2019 ◽  
Vol 89 (10) ◽  
pp. 1556
Author(s):  
Н.А. Тимофеев ◽  
В.С. Сухомлинов ◽  
G. Zissis ◽  
И.Ю. Мухараева ◽  
Д.В. Михайлов ◽  
...  

AbstractWe have studied a high- (ultrahigh-) pressure short-arc discharge in xenon with thoriated tungsten cathodes. A system of equations formulated based on earlier experimental data indicating possible emission of cathode material (thorium) into the discharge gap has made it possible to determine the electric field strength, plasma temperature, and concentration of thorium atoms as well as thorium and xenon ions in the plasma. The problem has been solved for a model discharge between planar electrodes. The results indicate the key role of thorium atoms in the cathode region. Thorium atoms determine the ionization balance and other electrokinetic properties of plasma. Emission of thorium atoms reduces the plasma temperature at the cathode, which turns out to be noticeably lower than the plasma temperature near the anode; this is a new result that agrees with experimental data. Other electrokinetic characteristics of the plasma (in particular, charged particle concentration and electric field strength) are also in good agreement with the experiment.


2019 ◽  
Vol 6 (2) ◽  
pp. 111-114
Author(s):  
R. Kornev ◽  
P. Sennikov ◽  
V. Nazarov ◽  
A. Kut'in ◽  
A. Plekhovich

A contracted RF (40.68 MHz) arc discharge of atmospheric pressure, stabilized between two rod electrodes, was used to obtain trichlorosilane by the reaction of hydrogen reduction of silicon tetrachloride (SiCl<sub>4</sub>). In model mixtures of macro-composition in the ratio H<sub>2</sub>/SiCl<sub>4</sub>/CCl<sub>4</sub>=10/1/1, it was shown that C and SiC are the main solid-phase product which are deposited on the surface of electrodes in the form of dendrides. The temperature of the ends of the electrodes determined using emission thermometry is 1600 K. The thermodynamic analysis of H<sub>2</sub>+SiCl<sub>4</sub>+CCl<sub>4</sub> system confirms that the formation of C and SiC occurs in the temperature range of 1600 K. The deposition of solid-phase products occurs on the electrodes in the zone of high electric field strength.


2021 ◽  
pp. 83-90
Author(s):  
E. V. Leun ◽  

The article discusses the principles and possibilities of using jet-drop optical measuring systems for monitoring the electric field strength (EFS). Two applied techniques are considered. First, the deflection of flying charged droplets (balls, hollow granules) used as micro-objects sensitive to EFS and deviating from a given rectilinear trajectory of motion, like an electron in a kinescope. Secondly, stroboscopic determination of the position and/or displacement of drops by pulsed illumination of the side of the deflected drop by the optical flow and measurement of the reflection angle for it. The possibilities of implementing the differential method of EFS measurements are discussed. The features of the use of liquids with the addition of metal nanopowders or based on liquid metals, as well as hollow droplets in the form of microspheres or hollow granules are considered


2016 ◽  
Vol 25 (5) ◽  
pp. 054002 ◽  
Author(s):  
P Böhm ◽  
M Kettlitz ◽  
R Brandenburg ◽  
H Höft ◽  
U Czarnetzki

2017 ◽  
Vol 19 (32) ◽  
pp. 21696-21706 ◽  
Author(s):  
Ji Xing ◽  
Sitong Lu ◽  
Chi Zhang ◽  
Min Yin ◽  
Dongdong Li ◽  
...  

The electric field strength during aluminum anodization was clarified, and this work can shed some light on the self-ordering mechanism of porous anodic alumina.


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