Virtual cathode emission of an annular cold cathode [PDF]
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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Investigation of an Axial Virtual Cathode Oscillator with an Open-Ended Coaxial Cathode [PDF]
Journal of Electromagnetic Engineering and Science, 2022 A cathode with an open-ended coaxial structure is experimentally investigated using an axial virtual cathode oscillator (vircator). To enhance the microwave power output, an open-ended coaxial cathode is installed in the axial vircator.
Se-Hoon Kim +3 more
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On the virtual cathode oscillator’s energy optimization [PDF]
AIP Advances, 2018 This paper presents a method for the maximization of the energy radiated by a Vircator at a given band of frequencies. The research focuses on axially extracted Vircators.
E. Neira, Y.-Z. Xie, F. Vega
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Galvanic vestibular stimulation promotes visuospatial cognitive recovery in acute unilateral vestibulopathy via targeted neural modulation: a randomized controlled trial [PDF]
Journal of Translational MedicineBackground The vestibular system plays a crucial role in spatial orientation and hippocampal-dependent memory. While bilateral vestibular loss is known to impair spatial cognition, recent evidence highlights that even unilateral vestibular deficits ...
Sun-Young Oh +4 more
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Investigation of effective parameters in increasing the confinement time of electrons in a low beta Polywell device [PDF]
مجله علوم و فنون هستهای, 2023 In a polywell reactor, it is critical to have a stable and energetic virtual cathode that is necessary to accelerate ions and create fusion interactions.
M. Bagheri, +3 more
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Dynamics of cylindrical electron beams injecting in a half-space with perfectly-conducting boundary [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамика, 2020 The purpose of this work is to study the dynamics of electron beams and bunches in a system with an ideally conducting plane and a uniform magnetic field in the presence of delayed electromagnetic waves when a virtual cathode is formed in the system and ...
Shein, A. G. +1 more
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Collective Acceleration of Helium Ions from Its Residual Atmosphere in a Luce Diode
Quantum Beam Science, 2023 The collective acceleration of helium ions from its residual atmosphere in the Luce diode was studied at helium pressures from 0.13 to 0.23 Pa. The energy of accelerated ions was determined from the drift velocity of the virtual cathode accelerating the ...
Vladislav Ryzhkov +2 more
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The virtual cathode chamber [PDF]
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1997 Abstract We describe the operating principle and the first experimental results obtained with gas micro-strip detectors realized with anodes only on the active side, the multiplying field being provided from the back-plane and drift electrodes.
M. Capeáns +6 more
openaire +1 more source
The effect of spacing factor on the confinement time of the electrons in a low beta Polywell device
AIP Advances, 2020 Using a three-dimensional numerical simulation, the dependencies of the electron cloud (virtual cathode) on the distance between the coils in the Polywell fusion reactor were examined.
M. Bagheri +3 more
doaj +1 more source
Investigation of a novel virtual cathode oscillator with decelerating electric field [PDF]
AIP AdvancesTraditional virtual cathode oscillators require extremely high operating voltage to generate beam currents exceeding the space charge limiting current to form virtual cathodes, which significantly limits their repetitive operation capability and ...
Wenhao Lian +5 more
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