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Cold cathode investigation [PDF]
1973 International Electron Devices Meeting, 1973 Experiments for the evaluation of a cold cathode electron gun are described. Different anode and cathode materials and configurations were tried. Small signal gains of 6.3 percent/cm were measured. It was found that the same small signal gains could be obtained with less energy deposition in the laser gas with the larger pre-ionizing currents from a ...
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ON THE INFLUENCE OF THE SHAPE OF ANODE VOLTAGE PULSE ON THE OPERATION STABILITY OF SPATIAL-HARMONIC MAGNETRON WITH COLD SECONDARY EMISSION CATHODE [PDF]
Радиофизика и электроника, 2018 One of the main problems faced by developers of modulators for spatial-harmonic magnetrons with cold secondary emission cathode is the selection of the correct shape of an anode voltage pulse that will ensure the stable operation of the magnetron.
V. А. Markov, V. D. Naumenko
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Applied Sciences, 2018 The carbon nanotube (CNT) cold cathode is an attractive choice for millimeter and terahertz vacuum electronic devices owning to its unique instant switch-on and high emission current density.
Qingyun Chen +5 more
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Virtual cathode emission of an annular cold cathode
Physical Review Special Topics. Accelerators and Beams, 2009 Recent measurement of voltage V and current I of the electron gun of a relativistic klystron amplifier revealed that the resulting current-voltage relationship appeared to differ from the usual Child-Langmuir law (I∝V^{3/2}) especially during the initial
S.-d. Park +7 more
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Maximizing the Field Emission Performance of Graphene Arrays
Nanomaterials, 2020 To design efficient and powerful field emission cathodes, the screening effect is of great importance and should be traded off between screening and emitter number.
Kaiqiang Yang +7 more
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Advanced Photonics Research, 2022 Exploring novel nanotechnology schemes for tunable broadband vacuum photodetection devices is of great significance. Herein, a strategy to combine a field‐emission cold cathode with plasmonic nanostructures to form a plasmon‐enhanced field‐emission ...
Yan Shen +4 more
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Nanomaterials, 2019 Hydroiodic acid (HI)-treated reduced graphene oxide (rGO) ink/conductive polymeric composites are considered as promising cold cathodes in terms of high geometrical aspect ratio and low field emission (FE) threshold devices.
Minas M. Stylianakis +7 more
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Metallurgical Processing for Impregnated Thermionic Cathodes Manufacturing
Materials Research, 2022 A metallurgical process using a very high temperature Mo-Ru brazing filler alloy to join a controlled porous tungsten cathode button and a single-crystalline molybdenum cathode body for microwave tubes manufacture was developed†.
Glauco P. Zanella +2 more
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Advanced Engineering Materials, EarlyView.Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi +7 more
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Nota Lepidopterologica, 2017 Most nocturnal Lepidoptera can be attracted to artificial light sources, particularly to those that emit a high proportion of ultraviolet radiation.
Gunnar Brehm
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