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Phase transition of melt-vapor in the magnesium–tin system and its technological application [PDF]
Scientific ReportsAs a result of research using the boiling point method, the partial pressure of magnesium above Mg–Sn alloys was determined, represented by the temperature-concentration dependence.
Valeriy Volodin +6 more
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A G-Band Broadband Continuous Wave Traveling Wave Tube for Wireless Communications
Micromachines, 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
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Vertical Nanoscale Vacuum Channel Triodes Based on the Material System of Vacuum Electronics
Micromachines, 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
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Collapse of vacuum bubbles in a vacuum [PDF]
Physical Review D, 2011 Motivated by the discovery of a plenitude of metastable vacua in a string landscape and the possibility of rapid tunneling between these vacua, we revisit the dynamics of a false vacuum bubble in a background de Sitter spacetime. We find that there exists a large parameter space that allows the bubble to collapse into a black hole or to form a wormhole.
Ng, Kin-Wang, Wang, Shang-Yung
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Development and Application Prospect of Space Electric Propulsion Technology
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
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The Unruh Vacuum and the “In-Vacuum” in Reissner-Nordström Spacetime
Universe, 2023 The Unruh vacuum is widely used as a quantum state to describe black hole evaporation since, near the horizon, it reproduces the physical state of a quantum field, the so-called “in-vacuum”, in the case where a black hole is formed by gravitational collapse.
Balbinot R., Fabbri A.
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Advances 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
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Frontiers 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
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Spatial evolution characteristics of ion and electron flow for 300 W class low-power Hall thruster
AIP 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
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Vacuum Gasification-Directional Condensation for Separation of Tellurium from Lead Anode Slime
Metals, 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
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