Results 1 to 10 of about 1,092,634 (357)

A G-Band Broadband Continuous Wave Traveling Wave Tube for Wireless Communications

open access: yesMicromachines, 2022
Development of a G-band broadband continuous wave (CW) traveling wave tube (TWT) for wireless communications is described in this paper. This device provides the saturation output power over 8 W and the saturation gain over 30.5 dB with a bandwidth of 27
Yuan Feng   +5 more
doaj   +1 more source

Vertical Nanoscale Vacuum Channel Triodes Based on the Material System of Vacuum Electronics

open access: yesMicromachines, 2023
Nanoscale vacuum channel triodes realize the vacuum-like transmission of electrons in the atmosphere because the transmission distance is less than the mean free path of electrons in air.
Panyang Han   +3 more
doaj   +1 more source

Development and Application Prospect of Space Electric Propulsion Technology

open access: yes气体物理, 2023
Space electric propulsion technology has entered a new stage of maturity and full application in China. In order to further promote and accelerate the development of electric propulsion technology, this paper adopted the methods of investigation and ...
Hai GENG   +8 more
doaj   +1 more source

A Study of Structural Parameters Effects on Pressure Differential to Roll Titanium Diaphragm for a Spacecraft Propellant Tank

open access: yesAdvances in Materials Science and Engineering, 2022
A range of titanium diaphragms for spacecraft propellant tanks are designed in detail, and two typical titanium diaphragms were manufactured and corresponding reversal tests were developed.
Tianju Ma   +5 more
doaj   +1 more source

Design of optically pumped cesium beam tube with hexapole magnetic system for longer lifetime and better SNR

open access: yesFrontiers in Physics, 2022
In order to get a better tradeoff between the long lifetime and high performances of cesium beam atomic clocks, we proposed a design scheme of compact optically pumped cesium beam tube (OPCBT) based on hexapole magnetic focusing (HMF) system for the ...
Haijun Chen   +3 more
doaj   +1 more source

Vacuum Gasification-Directional Condensation for Separation of Tellurium from Lead Anode Slime

open access: yesMetals, 2021
Tellurium is the indispensable base material of semiconductors in solar panels. Traditional tellurium recycling, a highly complicated separation process, has exhausted reagents and energy sources whilst producing waste residue and water containing ...
Zhe Gao   +7 more
doaj   +1 more source

Spatial evolution characteristics of ion and electron flow for 300 W class low-power Hall thruster

open access: yesAIP Advances, 2021
The Faraday probe and cylindrical Langmuir probe were used to characterize the downstream ion and electron spatial evolution of a 300 W class low-power Hall thruster.
Xinwei Chen   +10 more
doaj   +1 more source

Vacuum friction [PDF]

open access: yesJournal of Modern Optics, 2017
8 pages, 2 figures. Published in Journal of Modern Optics on 14 September 2017.
Stephen M. Barnett, Matthias Sonnleitner
openaire   +3 more sources

Experimental Comparison of the Single-Event Effects of Single-Photon and Two-Photon Absorption under a Pulsed Laser

open access: yesApplied Sciences, 2022
The pulsed laser has gradually become the standard method of studying the single-event effects of micro-nano devices, and it is a powerful supplement to heavy ion experiments on single-event effects.
Heng An   +6 more
doaj   +1 more source

New Vacuum Electronic Devices for Radar

open access: yesLeida xuebao, 2016
Vacuum Electronic Devices (VEDs) which are considered as the heart of a radar system, play an important role in their development. VEDs and radar systems supplement and promote each other.
Hu Yinfu, Feng Jinjun
doaj   +1 more source

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