Results 21 to 30 of about 675,095 (343)
Field-emission cathode gating for rf electron guns
Physical Review Special Topics. Accelerators and Beams, 2005 We present a novel method of combining the most desirable characteristics of thermionic-cathode and photocathode rf guns, using a field-emission cathode and multiple rf frequencies. Simulations indicate that extremely low-emittance beams (on the order of
J. W. Lewellen, J. Noonan
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FIELD ELECTRON EMISSION FROM NANOSTRUTURED SURFACE OF CARBONIZED IRIDIUM
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019 The characteristics of the field electron emission of the iridium tip with different carbon formations on its surface are investigated. It was found that in some cases, compared to metal emitters the carbon-coated emitter exhibits significantly greater ...
D.P. Bernatskii, V.G. Pavlov
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Model of Field Electron Emission from the Edge of Flat Graphene into Vacuum
Приборы и методы измерений, 2019 Graphene-based nanostructures are the promising materials for applications as electron emitters.The aim of the work is to study the field electron emission from the edge of a single graphene plane.In the semi-classical approximation, a model of field ...
N. A. Poklonski +4 more
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Subcycle surface electron emission driven by strong-field terahertz waveforms
Nature Communications, 2023 The advent of intense terahertz (THz) sources opened a new era when the demonstration of the acceleration and manipulation of free electrons by THz pulses became within reach.
Shaoxian Li +9 more
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Journal of Telecommunications and Information Technology, 2023 The aim of this paper is to report the results of field emission experiments on undoped, flat diamond-like carbon (DLC) thin films deposited at various self-bias voltages using radio frequency plasma chemical vapor deposition (RF PCVD) technique. It has
Dagmara Jarzyńska +3 more
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Laser-induced Field Emission from Tungsten Tip: Optical Control of Emission Sites and Emission Process [PDF]
, 2010 Field-emission patterns from a clean tungsten tip apex induced by femtosecond laser pulses have been investigated. Strongly asymmetric field-emission intensity distributions are observed depending on three parameters: (1) the polarization of the light ...
Doná, Patrick +7 more
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Field‐Induced Electron Emission from Nanoporous Carbons [PDF]
Journal of Nanomaterials, 2014 Influence of fabrication technology on field electron emission properties of nanoporous carbon (NPC) was investigated. Samples of NPC derived from different carbides via chlorination at different temperatures demonstrated similar low‐field emission ability with threshold electric field 2‐3 V/μm.
Alexander Arkhipov +5 more
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Mechanism of Laser-induced Field Emission
, 2011 We have measured electron energy distribution curves (EDCs) of the laser-induced field emission from a tungsten tip. Field emission from photo-excited nonequilibrium electron distributions were clearly observed, while no enhanced field emission due to ...
Greber, Thomas +6 more
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Binary Neutron Star Merger Remnants as Sources of Cosmic Rays Below the "Ankle" [PDF]
, 2018 We investigate non-thermal electron and nuclei energy losses within the binary neutron star merger remnant produced by the event GW170817. The lack of a cooling feature within the detected synchrotron emission from the source is used to constrain the ...
Biehl, Daniel +3 more
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Preparation and electron emission properties of carbon fiber composited graphite cathodes
Cailiao gongcheng, 2023 As the source of intense electron beam, the cathodes have an important effect on the performance of high power microwave source. Graphite is a common material for explosive emission cathodes of high power microwave source, which have the advantages of ...
FANG Dong +4 more
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