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Showing 1 to 9 of 9 for “"sheath potential"”.
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Microplasma Transistor With Quasi Metal-Oxide-Semiconductor (mos)/metal-Insulator-Metal (Mim) Electron Emitters
… predictions with experimental estimates of the sheath potential shows agreement between the two to within 5% over the entire range in voltage investigated. This simulation, in tandem with the measured sheath potential, provides a new probeless method to determine the electron density at the …
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Plasma Properties and Heating at the Anode of a 1 kW Arcjet Using Electrostatic Probes
… axial and azimuthal distributions of floating potential $\phi\sb{\rm f}$, anode sheath potential $\phi\sb{\rm s}$, probe current density at zero volts j$\sb{\rm a}$, electron number density n$\sb{\rm es}$, electron temperature T$\sb{\rm es}$, and anode heating due to electrons q$\sb{\rm e}$ for …
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Numerical analysis of radio-frequency sheath-plasma interactions in the ion cyclotron range of frequencies
… due to the formation of radio-frequency (RF) sheaths is one of the root causes of this problem. Since the RF-enhanced sheaths have many undesirable effects, such as impurity production and hot spot generation, a predictive numerical tool is required to quantitatively evaluate these effects …
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ΦΑΙΝΟΜΕΝΑ ΑΛΛΗΛΕΠΙΔΡΑΣΗΣ ΠΛΑΣΜΑΤΟΣ ΧΑΜΗΛΗΣ ΠΙΕΣΗΣ ΚΑΙ ΜΕΤΑΛΛΙΚΗΣ ΕΠΙΦΑΝΕΙΑΣ
… THE DEPENDENCE OF LIFETIME DECREASE ON THE SHEATH POTENTIAL AS WELL AS ON OTHER IMPORTANT PARAMETERS (CROSS SECTION, PROFILE OFTHE ELECTRIC FIELD, PRESSURE, SHEATH LENGTH) IS FURTHER DISCUSSED.
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Radio frequency driven direct current electron beam source
… through the rectifying behavior of the plasma sheath provides the effective DC field for both ion impingement and electron beam acceleration. The electron beam energy spectra are measured at a location 14 cm from the cold cathode using a differentially pumped retarding potential analyzer. The …
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Space-Charge Saturation and Current Limits in Cylindrical Drift Tubes and Planar Sheaths
… behavior found in plasmas, especially in plasma sheaths. A plasma sheath is the transition region between a bulk plasma and an adjacent plasma-facing surface. The sheath controls the loss of particles from the plasma in order to maintain neutrality. Using a fully kinetic theory, the problem of a …
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Characterization of short-pulse laser-produced fast electrons by 3D hybrid particle-in-cell modeling of angularly resolved bremsstrahlung
… complex electron trajectories caused by electric sheath potential, known as electron recirculation. This thesis reports on developing a novel fast electron characterization technique by modeling angularly resolved bremsstrahlung radiations with a three-dimensional (3D) hybrid Particle-in-cell …
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Kinetic Study of the Sheath Region Near the First Wall for Tokamak Fusion Reactors
Made available in DSpace on 2017-07-06T18:56:15Z (GMT). No. of bitstreams: 3 Schwager_Lou_Ann_MS.pdf: 30433195 bytes, checksum: 4e568494b260d6c2295e0c3c8e5c9c60 (MD5) Schwager_Lou_Ann_MS_ABS.pdf: 341201 bytes, checksum: a7aa856d8326e24ad6c22a381e5dafd2 (MD5) license.txt: 4813 bytes, checksum: …
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Modeling and experimental process optimization for a SiH4 + H2 surface wave plasma discharge for silicon photovoltaics
… of ions due to high freqency, as well as low sheath potential due to low electron temperature T_e, combined to generate high quality Si thin films relative to the RF CCP industry standard. Numerical modeling of the SiH4 + H2 model was achieved using the volume-averaging formulation of Kim and …