نتایج جستجو برای: electromagnetic pulse

تعداد نتایج: 164181  

1988
R. Ruffini

We study the relativistically expanding electronpositron pair plasma formed by the process of vacuum polarization around an electromagnetic black hole (EMBH). Such processes can occur for EMBH’s with mass all the way up to 6 · 105M . Beginning with a idealized model of a ReissnerNordstrom EMBH with charge to mass ratio ξ = 0.1, numerical hydrodynamic calculations are made to model the expansion...

2012
Emmanuel Paspalakis John Boviatsis

: We study the creation of high-efficiency controlled population transfer in intersubband transitions of semiconductor quantum wells. We give emphasis to the case of interaction of the semiconductor quantum well with electromagnetic pulses with a duration of few cycles and even a single cycle. We numerically solve the effective nonlinear Bloch equations for a specific double GaAs/AlGaAs quantum...

2015
Hiroki Wakatsuchi

In general electromagnetic response of each material to a continuous wave does not vary in time domain if the frequency component remains the same. Recently, it turned out that integrating several circuit elements including schottky diodes with periodically metallised surfaces, or the so-called metasurfaces, leads to selectively absorbing specific types of waveforms or pulse widths even at the ...

Journal: :Optics and Spectroscopy 2022

In this work, we study the interaction of extremely short pulses with a nonlinear anisotropic optical medium carbon nanotubes (armchair and zigzag type) metallic conductivity. The dependence pulse shape, width, intensity on nanotube chirality indices is analyzed. most appropriate type substantiated for providing localized propagation an electromagnetic field in properties. Keywords: anisotropy,...

Journal: :Physical review 2021

Interaction of an electron with the counter-propagating electromagnetic wave is studied theoretically and particle-in-cell simulations in regime quantum radiation reaction. We find energy center laser pulse, as it a key factor for testing non-linear electrodynamics vacuum properties laser-electron collision multi-photon Compton scattering Cherenkov radiation. With multiparametric analysis we pr...

Journal: :Physical Review X 2022

A new quantum random-access memory device reads and writes information using a chirped electromagnetic pulse superconducting resonator, making it significantly more hardware-efficient than previous devices.

1988
R. Ruffini

The interaction of an expanding PairElectromagnetic pulse (PEM pulse) with a shell of baryonic matter surrounding a Black Hole with electromagnetic structure (EMBH) is analyzed for selected values of the baryonic mass at selected distances well outside the dyadosphere of an EMBH. The dyadosphere, the region in which a super critical field exists for the creation of e+e− pairs, is here considere...

2003
Sergei V. Shabanov

A novel time domain solver of Maxwell’s equations in passive (dispersive and absorbing) media is proposed. The method is based on the path integral formalism of quantum theory and entails the use of (i) the Hamiltonian formalism and (ii) pseudospectral methods (the fast Fourier transform, in particular) of solving differential equations. In contrast to finite differencing schemes, the path inte...

2016
Hong-Cheng Wei Jean-Fu Kiang

High-altitude electromagnetic pulse (HEMP) radiated from both primary and secondary currents, which are induced by a nuclear explosion, is computed by using the Jefimenko’s equation. The effects of geomagnetic field is considered in computing the primary current, and the rough sea surface is considered in computing the reflected electric field in the frequency domain. The waveforms of HEMP near...

Journal: :Optics express 2011
Che-Yun Lin Alan X Wang Beom Suk Lee Xingyu Zhang Ray T Chen

We design a high dynamic range electric field sensor based on domain inverted electro-optic (E-O) polymer Y-fed directional coupler for electromagnetic wave detection. This electrode-less, all optical, wideband electrical field sensor is fabricated using standard processing for E-O polymer photonic devices. Experimental results demonstrate effective detection of electric field from 16.7V/m to 7...

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