2 edition of study of the D.C. glow discharge in flowing nitrogen gas. found in the catalog.
study of the D.C. glow discharge in flowing nitrogen gas.
Stafford Glen Chenery
Written in English
|Contributions||Toronto, Ont. University.|
|The Physical Object|
|Pagination||x, 98,  leaves.|
|Number of Pages||99|
A number of experiments have been reported on non-equilibrium regimes of discharges in atmospheric-pressure air, in particular, glow-type discharges in open ambient air (e.g., [1,2,3,4,5,6,7,8,9,10,11,12]), and in fast longitudinal flows of air [13,14].In [13,14], the parameters of a low-current glow discharge in a high-velocity flow of preliminary heated air (T 0 = – K) at Author: Ezequiel Cejas, Beatriz Rosa Mancinelli, Leandro Prevosto. The phenomena that occur in the region CG are the post-breakdown phenomena consisting of glow discharge (CE) and the arc discharge (EG) Glow Discharge • A glow discharge is characterized by a diffused luminous glow. The colour of the glow discharge depends on the cathode material and the gas used. • The glow discharge covers the cathode.
The nitriding processes were conducted in a DC glow discharge with nitrogen gas flowing inside the vacuum chamber. Firstly, the sample was nitrided using a fixed gas pressure of mbar with the varied nitriding times of 3, 4, 5 and 6 hours. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.
move from the dark region into the normal glow discharge region . The glow discharge region is shown in greater details in Figure The region from F to G is called the normal glow discharge. In this region, the voltage is relatively independent of the total current flowing in the discharge . This paper reports the results of an extensive study of with the in situ mass spectrometry analysis of gaseous phase species produced by an atmospheric plasma glow discharge in N 2 -CH 4 gas mixtures (with methane concentrations ranging from 1% to 4%). The products are studied using proton-transfer-reaction mass spectrometry (PTR-MS).Cited by: 3.
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Abstract The plasma properties from a DC pseudo-discharge have been studied in low-pressure nitrogen gas. The discharge took place between a virtual cathode and a.
In this study, we have developed a self-consistent fluid model of standing striations in nitrogen with detailed kinetics of vibrationally excited molecules. The model enabled us to simulate self-excited standing striations observed in Nitrogen dc glow discharges operating at moderate pressure (i.e., few Torrs) at the low current regime ( Author: Rajib Mahamud, Tanvir Farouk, Vladimir Kolobov.
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atoms in nitrogen DC glow discharge A V Volynets, D V Lopaev, T V Rakhimova et al.-Vacuum UV and UV spectroscopy of a N2 Ar mixture discharge created by an RF helical coupling device C Foissac, J Kri tof, A Annu ová et al.-Gas temperature determination from rotational lines in non-equilibrium plasmas: a review P J Bruggeman, N Sadeghi, D C Cited by: The statu osf researc ohn glow discharge in as gas flow use, idn pumpin fast-flog lasersw is reviewed.
Systematic study of this discharge began abou 10 yeart s ago. This discharge form, accordin to ag number of. flowing discharge study were the following: total pressure of the gas mixture: 1÷ mbar, nitrogen flow rate: ÷ sccm, D.C. discharge current intensity: 50÷ mA, hydrocarbon flow rate: 0÷10 sccm, hydrocarbon vapours concentration in nitrogen: ÷%, full afterglow period: up to s, the late-File Size: KB.
First, we generate APGD plasma in the condition of 1 atm, helium, 3 mm spacing, 33 kHz, kV applied voltage. Then the frequency is changed to investigate the impact on discharge appearance.
It can be seen that the glow area reduces due to the rises of frequency and even disappear. But if V amplitude is increased, the glow turns out by: 8.
The material to be analysed serves as the cathode of the glow discharge. The argon ions from the plasma (and also fast argon atoms) that bombard the cathode can also release atoms of the cathode material, which is called sputtering.
The sputtered atoms arrive in. Through the study on electric field distributions, flow field distributions, and characteristics of the discharge and jet, we found that adopting the mode of dielectric barrier discharge with non-uniform thickness of dielectric, it was easy to form the strong electric field areas which were conducive to generate discharge and electric field distributions with large electric field intensity in the narrow gap Author: Liu, Wenzheng.
A glow discharge is a plasma formed by the passage of electric current through a gas. It is often created by applying a voltage between two electrodes in a glass tube containing a low-pressure gas. When the voltage exceeds a value called the striking voltage, the gas ionization becomes self-sustaining, and the tube glows with a colored light.
The color depends on the gas used. A two‐dimensional model of the positive column of a glow discharge in flowing nitrogen is presented.
The model is applicable to a cylindrically symmetric and axially nonuniform weakly ionized discharge. Nitrogen ionization mainly results from associative ionization occurring in the collisions of metastable molecules in the a ’ 1 Σ − u and A 3 Σ + u electronic by: Abstract.
The problem of environmental pollution has a growing importance and is today of global value for the world. Acid rain, greenhouse effect, and ozone depletion are well known manifestations of the atmospheric contamination by SO 2, NO x, CO 2 and chlorofluorocarbons. The non-thermal plasma techniques developed recently provide an effective means for pollution by: 3.
The glow discharges using helium, neon and argon were performed after the deuterium discharge to reduce the deuterium retention. The use of inert gas discharge little reduced the deuterium retention.
Namely, the inert gas glow discharge is not useful to reduce the tritium inventory. 'a glow-discharge chamber with ultraclean, dry, and chemically inert gas during the flow-discharge phase.
A large vacuum chamber is used which is 81 centimeters in diameter and 3 meters long. The purging gas is allowed to flow through the chamber, past the sample holder, at a rate of about 3 S'i(Continued on back) DD iAuthor: James P Weston, William W Balwanz. A study has been performed to investigate the kinetics of production of N atoms and NO molecules in DC N2-O2 flowing glow discharges at pressure rho = Torr for discharge currents I=15, 30, 80 mA.
Effect of Gas Pressure and Gas Flow Rates on the Plasma Voltage The effect of gas pressure on the voltage which was needed to strike the glow discharge & maintain it under three different gas flow rates was investigated.
Examples of the results obtained from this work are shown in Figure 4 using (a) Ni target and (b) Ni 81 Fe 19File Size: 1MB. Pelagia Research Library Der Chemica Sinica,4(2) ISSN: CODEN (USA) CSHIA5 94 Pelagia Research Library Experimental study of the influence of nitrogen admixture on characteristics of DC glow discharge in He gas O.
Farag and M. Mansour Zagazig University, Faculty of Science, Physics Department, Zagazig - Egypt. The DC glow discharge was first observed with helium, neon, and nitrogen used as working gas in a tube at the low pressure, and characterized by different regions depending on the discharge parameters (e.g., the geometry of the electrodes, the gas type, and the pressure) 6.
This kind of discharge was also successfully generated at high pressure Cited by: Title: Study of generating nitrogen plasma jet by using glow discharge in non-uniform gap: Authors: Liu, Wenzheng; Li, Zhiyi; Ma, Chuanlong; Zhao, Luxiang: Affiliation: AA(School of Electrical Engineering, Beijing Jiaotong University, Beijing, People's Republic of China), AB(School of Electrical Engineering, Beijing Jiaotong University, Beijing, People's Republic of China), AC.
Positive column of a glow discharge in flowing nitrogen L. Dmitriev 1 Journal of Applied Mechanics and Technical Physics vol pages – () Cite this articleAuthor: L. Dmitriev. Design and Construction of Argon D.C Glow Discharge Plasma During glow discharge, argon gas was admitted to the chamber by a mass flow meter.
A rate of sccm of argon gas is admitted to maintain a suitable a pressure for as a function of nitrogen gas pressure in the.(see, e.g. ). Despite this fact, the dc glow discharge remains to be less studied than the much more «younger» discharges in alternate electric fields .
The positive column is one of the important constituents of the glow discharge used for pumping gas discharge lasers. The positive column of the glow.Abstract: Atmospheric pressure glow discharge (APGD) was produced in a 5-mm helium gap between two plane-parallel electrodes of 50 mm in diameter, each covered by a 1-mm thick quartz plate.
The influence of the helium gas flowing in parallel through the helium gap on APGD was studied. The helium flow rate varies up to 12 liter per minute, corresponding to helium at a speed of 67 cm/s flowing Author: H.
Luo, Z. Liang, B. Lv, X. Wang, Z. Guan, L. Wang.