نتایج جستجو برای: electric pulse
تعداد نتایج: 228782 فیلتر نتایج به سال:
We studied the development of surface instabilities leading to the generation of multielectron bubbles (MEBs) in superfluid helium upon the application of a pulsed electric field. We found the statistical distribution of the charge of individual instabilities to be strongly dependent on the duration of the electric field pulse. The rate and probability of generation of these instabilities in re...
In this article, we propose a generalization of the theory of di usion approximation for random ODE to a nonlinear system of random Schrödinger equations. This system arises in the study of pulse propagation in randomly birefringent optical bers. We rst show existence and uniqueness of solutions for the random PDE and the limiting equation. We follow the work of Garnier-Marty [16, 20], where a ...
In this article, we propose a generalization of the theory of diffusion approximation for random ODE to a nonlinear system of random Schrödinger equations. This system arises in the study of pulse propagation in randomly birefringent optical fibers. We first show existence and uniqueness of solutions for the random PDE and the limiting equation. We follow the work of Garnier-Marty [16, 20], whe...
Locoregional therapy is playing an increasingly important role in the non-surgical management of hepatocellular carcinoma (HCC). The novel technique of non-thermal electric ablation by nanosecond pulsed electric field has been recognized as a potential locoregional methodology for indicated HCC. This manuscript explores the most recent studies to indicate its unique anti-tumor immune response. ...
Human granulocytes exposed to pulsed electric guiding fields were investigated. The trajectories were determined from digitized pictures (phase contrast). The basic results are: (i) No directed response was induced by pulsed electric guiding fields having a zero averaged field. (ii) A directed response was induced by pulsed electric guiding fields having a non-zero averaged field. (iii) The dir...
A simulation of electric current pulses formed by a packet of gamma-quanta moving through an absorptive medium is presented. The electromagnetic fields of the current pulse moving along the straight line with super light velocity are obtained.
We provide a rigorous lower bound for the ionization probability of a Rydberg atom under the perturbation by a time-dependent electric eld in the form of an ultrashort pulse idealized as a Dirac-function. This estimate is of the form 1 ? O(F ?4 0) for large values of the electric eld F 0. For the hydrogen atom we also prove the scaling behavior F 0 n ?1 , predicted recently by Reinhold et al. P...
The precise position control, of multi-motor electric vehicles (EVs) by generating the asymmetric pulse generation is presented. The energy saving algorithm is implemented in the power drain control of EV system to improve the electrical safety and slip control of electric vehicle. The acceleration and Deceleration of the electric vehicle for wheel slip control were analyzed using the parameter...
Multiferroics have attracted strong interest for potential applications where electric fields control magnetic order. The ultimate speed of control via magnetoelectric coupling, however, remains largely unexplored. Here, we report an experiment in which we drove spin dynamics in multiferroic TbMnO3 with an intense few-cycle terahertz (THz) light pulse tuned to resonance with an electromagnon, a...
We have experimentally studied the transient velocity overshoot dynamics of photoexcited carriers in GaAs for electric fields as great as 200 kV/cm. Time domain waveforms proportional to the velocity and the acceleration of carriers have been acquired? respectively, from guided and free-space radiating signals which contain terahertz frequency components. The measurements demonstrated that the ...
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