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Расчетная оценка относительной диэлектрической проницаемости проводниковых немагнитных материалов при воздействии на них переменного тока проводимости

Authors: Baranov, M.I.;

Расчетная оценка относительной диэлектрической проницаемости проводниковых немагнитных материалов при воздействии на них переменного тока проводимости

Abstract

The results are given of approximate calculations of the relative permittivity epsilon;r of conductive unmagnetic materials metals and alloys for a special case when the of conductivity and displacement currents are equal in a homogeneous unmagnetic medium. The above mentioned materials are widely used in the electric power engineering and high-voltage pulse engineering in conditions when alternating pulse electric currents and electromagnetic fields EMFs with different peaktemporal parameters are acting on them. It is demonstrated that in the studied case the examined materials for low frequencies f0 of the current and EMF at the frequencies about 102 Hz within the range of very long electromagnetic waves EW are characterized by very high values of the electrophysical parameter epsilon;r about 1015. For the very high frequencies f0 of the current and EMFs at the frequencies about 51013 Hz from the range of infrared radiation the indicated conducting materials are characterized by the epsilon;r values of the order of 102ndash;104 and according to the electrophysical parameter epsilon;r they will approach to solid dielectrics and ferroelectrics.

На основе частного случая равенства плотностей тока проводимости и смещения в однородной немагнитной проводящей среде рассмотрены результаты приближенной расчетной оценки относительной диэлектрической проницаемости epsilon;r проводниковых немагнитных материалов металлов и сплавов, широко применяемых в силовой электротехнике, промышленной электроэнергетике и высоковольтной импульсной технике в условиях воздействия переменных импульсных электрических токов проводимости и электромагнитных полей ЭМП различных амплитудно-временных параметров. Показано, что в исследуемом случае для низких частот f0 тока проводимости и ЭМП при частоте порядка 102 Гц из диапазона сверхдлинных электромагнитных волн ЭМВ рассматриваемые материалы характеризуются сверхбольшими значениями электрофизического параметра epsilon;r порядка 1015. Для сверхвысоких частот f0 тока и ЭМП при частоте порядка 51013 Гц из диапазона ЭМВ инфракрасного излучения указанные проводящие материалы определяются значениями epsilon;r порядка 102ndash;104, и по электрофизическому параметру epsilon;r они будут приближаться к твердым диэлектрикам и сегнетоэлектрикам.

Related Organizations
Keywords

calculation, электрический переменный (импульсный) ток проводимости, относительная диэлектрическая проницаемость металлов (сплавов), немагнитные металлы и сплавы, unmagnetic metals and alloys, electromagnetic field, электромагнитное поле, electric alternating (pulse) current, relative pertmittivity of metals (alloys), расчет

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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