نتایج جستجو برای: electric space charge
تعداد نتایج: 750428 فیلتر نتایج به سال:
The idea that electromagnetic charge may be a manifestation of the topology of space has a very long history [Whe, WM, Sor]. The basic configuration considered by Wheeler and Misner was a space that contained a handle-like region, often called a wormhole. This space is traversed by sourceless electric lines of force that enter the wormhole radially through one mouth and exit through the other o...
Kerr electro-optic technique has been used to measure the electric field distribution in high voltage stressed dielectric liquids, where the difference between refractive indices for light polarized parallel and perpendicular to the local electric field is a function of the electric field intensity. For transformer oil, the most widely-used insulating liquids in power apparatus and high voltage...
[1] Measurements of very low frequency radio emissions indicate that substantial electric current flows inside some sprites. This charge motion, with presently unknown location and distribution, is related to the detailed internal microphysics of sprite development that is in turn connected to the impact sprites have on the mesosphere. Assuming that sprite streamers propagate along the directio...
In the present contribution we show that the introduction of a conserved axial current in electrodynamics can explain the quantiza-tion of electric charge, preserving parity conservation, and introduces a dynamical discreteness into space-time. 1-Introduction In 1931 Dirac proposes an electromagnetic theory with magnetic monopoles [1] , whose appeal is mainly connected to the possibility of exp...
We discuss monopole core metastability in Alice electrodynamics. It is argued that in some part of the parameter space the spherically symmetric magnetic monopole is no longer the lowest energy configuration carrying a magnetic charge, and that a point monopole may well decay into an Alice loop carrying magnetic Cheshire charge. In view of an expected electric-magnetic duality, similar implicat...
We report on electrostatic measurements made on board the European Space Agency mission LISA Pathfinder. Detailed measurements of the charge-induced electrostatic forces exerted on free-falling test masses (TMs) inside the capacitive gravitational reference sensor are the first made in a relevant environment for a space-based gravitational wave detector. Employing a combination of charge contro...
The effect on the operation of a vacuum diode of a spatially varying distribution of free electrons, commonly called space charge, was first considered by Child [1] and Langmuir [2]. In that example electrons are released from a hot cathode at low velocity, and then drift freely under the influence of the local electric field as modified by the drifting electrons. In this problem, deduce the st...
We show that for asymptotically vanishing Maxwell fields in Minkowski space with non-vanishing total charge, one can find a unique geometric structure, a null direction field, at null infinity.. From this structure a unique complex analytic world-line in complex Minkowski space that can be found and then identified as the complex center of charge. By ”sitting” in an imaginary sense, on this wor...
The electric field in irradiated silicon diodes was modified by manipulating the occupation of deep levels. This was achieved by continuous injection of holes using light illumination. Effective trapping probabilities and space-charge concentrations were measured in this operating mode. The bias voltage needed to establish the electric field in the whole detector volume, charge collection, powe...
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