The Dispersion of Strong Field Dielectric Permittivity in (1-x)PMN-(x)PT Ceramics

The Dispersion of Strong Field Dielectric Permittivity in (1-x)PMN-(x)PT CeramicsWe propose the method of analysis of the dielectric permittivity measured in very strong electric fields. The method is based on the numeric calculations of derivative fromP - Ehysteresis loop. Such investigations have been performed for PMN-PT ceramics at various temperatures and frequencies. As a result we analyze the low frequency dispersion of the strong field dielectric permittivity.

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Numerical modeling of cathode-directed streamers branching in strong electric fields

Electromagnetic field and materials (fundamental physical research) »with international participation ◽

10.12737/22882 ◽

2016 ◽

Author(s):

Белогловский ◽

Andrey Beloglovskiy ◽

Федорова ◽

A. Fedorova

Keyword(s):

Numerical Modeling ◽

Numerical Model ◽

Electric Fields ◽

Strong Field ◽

Strong Electric Field ◽

Three Dimensional ◽

Strong Electric Fields ◽

Electron Avalanches ◽

Discharge Gap ◽

Positive Streamer

A research of conditions of the branching of positive streamer in air in a strong electric field by the use a three-dimensional numerical model is presented. This model is based on the assumption that the development of large electron avalanches in the strong field in front of the streamer head leads to branching. Tendency for branching has been observed, if the ratio of the diameters of the streamer heads to the distance between them is not greater than 0.55. If this ratio is more than 0,55, merger of originally formed streamer heads has been observed, and then only one streamer develops in the discharge gap.

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Low-frequency dispersion of the dielectric permittivity in a triglycine sulfate crystal subjected to nonequilibrium conditions

Physical Review B ◽

10.1103/physrevb.41.3829 ◽

1990 ◽

Vol 41 (6) ◽

pp. 3829-3831 ◽

Cited By ~ 3

Author(s):

H. J. Sajosch ◽

T. Narz

Keyword(s):

Dielectric Permittivity ◽

Low Frequency ◽

Frequency Dispersion ◽

Triglycine Sulfate ◽

Nonequilibrium Conditions ◽

Sulfate Crystal

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Low-frequency dispersion of the negative dielectric permittivity in C70 films

Physics of the Solid State ◽

10.1134/1.1521479 ◽

2002 ◽

Vol 44 (11) ◽

pp. 2200-2203 ◽

Cited By ~ 9

Author(s):

V. V. Makarov ◽

A. B. Sherman

Keyword(s):

Dielectric Permittivity ◽

Low Frequency ◽

Frequency Dispersion

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Dielectric Permittivity of Polymer Composites with Encapsulated Liquid Crystals in Strong Electric Fields

Russian Physics Journal ◽

10.1007/s11182-013-0116-3 ◽

2013 ◽

Vol 56 (8) ◽

pp. 902-907 ◽

Cited By ~ 4

Author(s):

K. R. Zhdanov ◽

A. I. Romanenko ◽

G. M. Zharkova ◽

V. I. Suslyaev ◽

V. A. Zhuravlev

Keyword(s):

Liquid Crystals ◽

Dielectric Permittivity ◽

Polymer Composites ◽

Electric Fields ◽

Strong Electric Fields

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Separatrix regions of magnetic reconnection at the magnetopause

Annales Geophysicae ◽

10.5194/angeo-27-4039-2009 ◽

2009 ◽

Vol 27 (10) ◽

pp. 4039-4056 ◽

Cited By ~ 24

Author(s):

T. Lindstedt ◽

Yu. V. Khotyaintsev ◽

A. Vaivads ◽

M. André ◽

R. C. Fear ◽

...

Keyword(s):

Magnetic Reconnection ◽

Electric Fields ◽

Strong Field ◽

Potential Drop ◽

Current Layer ◽

Dayside Magnetopause ◽

Outflow Region ◽

Strong Electric Fields ◽

Using Data ◽

Electric Fields And Currents

Abstract. Using data from the four Cluster spacecraft we study the separatrix regions of magnetic reconnection sites at the dayside magnetopause under conditions when reconnection is occurring in the magnetopause current layer which separates magnetosheath plasma from the hot magnetospheric plasma sheet. We define the separatrix region as the region between the separatrix – the first field line opened by reconnection – and the reconnection jet (outflow region). We analyze eight separatrix region crossings on the magnetospheric side of the magnetopause and present detailed data for two of the events. We show that characteristic widths of the separatrix regions are of the order of ten ion inertial lengths at the magnetopause. Narrow separatrix regions with widths comparable to a few ion inertial lengths are rare. We show that inside the separatrix region there is a density cavity which sometimes has complex internal structure with multiple density dips. Strong electric fields exist inside the separatrix regions and the electric potential drop across the regions can be up to several kV. On the magnetosheath side of the region there is a density gradient with strong field aligned currents. The observed strong electric fields and currents inside the separatrix region can be important for a local energization of ions and electrons, particularly of ionospheric origin, as well as for magnetosphere-ionosphere coupling.

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