Hollow cathode discharge

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Nettet2. mar. 2024 · Hollow cathode discharge (HCD) ion source explosives and related-compounds simultaneous detection oxidation adduct ions Birch type reduction hydride … Nettet20. sep. 2024 · The sputtering rate is 1 × 10 −3 at 60 eV, while it will increase to 1 × 10 −2 when the energy of ions increases to 95 eV. The current oscillation of the cathode …

WO3 and WO3-x thin films prepared by DC hollow cathode discharge

NettetA new structure of lanthanum hexaboride (LaB 6 ) hollow cathode insert, which has a cylindrical core, is studied in this paper. The cylindrical core is inserted into and connected at the back of the traditional hollow cylinder part. Two inserts with core and one traditional insert are tested. The new structure can largely reduce the cathode temperature, the … Nettet9. sep. 2013 · Studies of the hollow-cathode discharge have shown the existence of energetic ions at high-discharge currents that are likely responsible for the high erosion rates observed on the cathode keeper e... Reduction of Energetic Ion Production in Hollow Cathodes by External Gas Injection Journal of Propulsion and Power Skip to … open house bergen county nj

Spectroscopic analysis of magnetized hollow cathode …

Nettet13. feb. 2024 · Abstract The paper proposes a new glow discharge ion source based on a hollow cathode. The proposed source produces a denser plasma than the previously used glow discharge sources. It is shown experimentally that the maximum rate of cathode sputtering of a conducting solid sample in a hollow cathode ~25 mm in … NettetHollow cathode discharge: application of a deposition treatment in the iron sintering . × Close Log In. Log in with Facebook Log in with Google. or. Email. Password. Remember me on this computer. or reset password. Enter the email address you signed up with and we'll email you a ... NettetA hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (e.g. for atomic absorption spectrometers) and as a frequency tuner for light sources such as … iowa state university cheerleading

Effect of Working Current on C12A7 Hollow Cathode

Influence of heating on the discharge characteristics of a hollow …

Nettet23. des. 2024 · TMDs have also served as promising cathode materials for LIBs. 51 For example, a novel 2D/2D heterostructure-based cathode material has been synthesized with TiS 2-decorated VS 2 flakes deposited on carbon nanotubes via chemical vapor deposition (CVD). 52 A thin layer of TiS 2 coating (thickness ∼ 2.5 nm) on the VS 2 … Nettet9. des. 2016 · 2D Fluid Model. Figure 2 shows the schematic diagram of the HC discharge electrode used in the simulation. The diameter of the hole D is variable from 0 to 30 mm, while the radius of grounded anode keeps in R.The depth of the hollow l is 10 mm, and the gap d between cathode and anode electrodes is 20 mm. Because the hole … iowa state university chemistry departmentNettet4. jun. 1998 · ABSTRACT The current–voltage characteristics of hollow cathode discharges and their predischarges in argon under dc and pulsed conditions were found to have a positive slope at pressures up to approximately 50 Torr, and currents up to 20 mA, at a hole diameter of 0.7 mm. iowa state university cheer squad

"Nettet25. sep. 2024 · Hollow cathode arc (HCA) discharges have been used in extensive applications [1–8], ranging from vacuum microelec- tronic devices, lasers, and materials processing to spacecraft propulsion, due to the outstanding current-delivering capacity and structural simplicity of HCA devices. " - Hollow cathode discharge

Hollow cathode discharge

NettetIf a single plane cathode in a glow discharge is replaced by a cathode with some hollow structure such as a cylindrical or slit shaped hole, then, in a specific range of operating conditions the negative glow is found to be inside the hollow structure of the cathode. Nettet11. jun. 2004 · A hollow cathode discharge (HCD) is described that produces a highly ionized steady‐state plasma ( ne ≈10 13 −10 14 /cm 3) at a temperature 1–10 eV, in …

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Nettet13. jul. 2024 · To initiate the hollow-anode discharge at low pressure, a considerable electron flux from the cathode is required [ 12 – 14 ]. To create such a flux, different methods can be used. In the system shown in figure 2, the discharge is initiated as a result of the forced ignition of the cathode spot. Nettet3. apr. 2024 · Characterization of a Microhollow Cathode Discharge Plasma in Helium or Air with Water Vapor D. Fukuhara, S. Namba, K. Kozue et al.-Computational study of RF micro-hollow cathode discharge A Berkane, S Rebiai, F Bouanaka et al.-Dissociation of carbon dioxide using a microhollow cathode discharge plasma reactor: effects of …

NettetAbstract. The low pressure glow discharges considered in this paper are the hollow cathode (Paschen), and the flat cathode (Grimm). Both discharges have similar voltage … Nettet24. jul. 2000 · Hollow cathodes are routinely used to provide electrons for a wide variety of electric propulsion devices. Discharges to them are usually initiated by applying a high potential to an external...

Nettet1. sep. 2024 · Hollow cathode discharge (HCD) is produced with a cathode containing a cavity. As the current increases, the discharge transits from an abnormal glow … Nettet7. apr. 2024 · If the nitriding treatment adopts hollow cathode discharge, the ionization rate and plasma density generated will be greater than the linear abnormal glow discharge [36,37]. Our previous work concluded that the HCPSN nitrided sample had a higher corrosion resistance in comparison with the bare AISI 4140 steel and the CPN samples .

Nettet1. jul. 2013 · An experimental investigation of a DC hollow cathode nitrogen glow discharge has been done at different gas pressure ranged from (0.075 to 0.75) torr and different radial positions of discharge ...

Nettet12. feb. 2024 · A hollow cathode discharge cell has been developed for a variety of sample phases. To make the experimental apparatus compact, we have adopted DC … open house birthday invitation wordingNettet1. nov. 2024 · Hollow cathodes are widely used as electron sources and neutralizers in ion and Hall electric propulsion. Special applications such as commercial aerospace and … iowa state university christmas ornamentsNettet31. mar. 2015 · The hollow cathode effect is generally understood to involve a lower than normal resistance plasma state. The hollow cathode discharge develops as the distance between opposing cathode surfaces, d, is reduced while the applied potential, V pl, and gas pressure, p, are kept constant, or conversely for a given cathode geometry, as the … iowa state university chess clubNettet5. aug. 1998 · The breakdown condition which corresponds to Paschen’s law contains, in addition to the first Townsend coefficient, and the secondary electron emission coefficient two parameters which characterize the reflecting action of the electric field and the lifetime of the electrons in the discharge. iowa state university christmas breakNettet1. sep. 2024 · Gas discharges between a cathode with a hollow structure and an arbitrarily formed anode are known as hollow cathode discharges (HCDs) . Because … iowa state university child careNettet29. mar. 2024 · The voltage transition phenomenon of the C12A7 hollow cathode under high-current conditions (more than 10 A) changed some key structures of the C12A7 … iowa state university child care traininghttp://web.mit.edu/skendig/Public/6.777/project/schoenbach%20cathode%20discharge.pdf iowa state university citi training