Ionization formation of plasma inhomogeneity by the near-zone field of a magnetic-type source in a magnetized plasma

Kudrin, Alexander V.; Курина, Л. Е.; Petrov, E. Yu.

doi:10.1134/1.1385636

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…We assumed that the antenna radius b ¼ 2.5 m, the duct radius a ¼ 5 m, and the plasma densityÑ inside the duct (normalized to N a ) varies in the range 10 <Ñ=N a < 30. The possibility to ensure such duct parameters is confirmed by the results of some active experiments on the additional ionization of the background ionospheric plasma in a strong field of the antenna onboard spacecraft, 34 as well as by the theoretical study 36 of the ionization formation of a field-aligned plasma density irregularity in the near-zone field of a loop antenna.…”

mentioning

confidence: 80%

Whistler wave radiation from a pulsed loop antenna located in a cylindrical duct with enhanced plasma density

Kudrin¹,

Shkokova²,

Ferencz

et al. 2014

Physics of Plasmas

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Pulsed radiation from a loop antenna located in a cylindrical duct with enhanced plasma density is studied. The radiated energy and its distribution over the spatial and frequency spectra of the excited waves are derived and analyzed as functions of the antenna and duct parameters. Numerical results referring to the case where the frequency spectrum of the antenna current is concentrated in the whistler range are reported. It is shown that under ionospheric conditions, the presence of an artificial duct with enhanced density can lead to a significant increase in the energy radiated from a pulsed loop antenna compared with the case where the same source is immersed in the surrounding uniform magnetoplasma. The results obtained can be useful in planning active ionospheric experiments with pulsed electromagnetic sources operated in the presence of artificial field-aligned plasma density irregularities that are capable of guiding whistler waves.

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mentioning

confidence: 80%

Whistler wave radiation from a pulsed loop antenna located in a cylindrical duct with enhanced plasma density

Kudrin¹,

Shkokova²,

Ferencz

et al. 2014

Physics of Plasmas

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show abstract

“…Substituting Eq. (14) into the rigorous dispersion relation derived in [5,18], and allowing for the relationship εη = −g 2 which is valid in frequency range (2), we can obtain an approximate representation of the dispersion relation in a form that is convenient for the further analysis. In the special case ν e =ν e = ν ea which is considered in what follows, an approximate dispersion relation takes the simplest form…”

Section: Modes Guided By a Nonuniform Density Ductmentioning

confidence: 99%

“…Note that such guiding structures can appear in a magnetoplasma as a result of the nonlinear interaction between the fields of electromagnetic sources and the surrounding (background) plasma medium [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Whistler waves guided by ducts with enhanced density in a collisional magnetoplasma

Es'kin

Zaboronkova

Kudrin

2008

Radiophys Quantum El

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UDC 533.951We study the guided propagation of whistler waves along cylindrical ducts with enhanced density in a collisional magnetoplasma. It is shown that under certain conditions, the presence of comparatively small dissipative losses due to electron collisions in a plasma medium can lead to significant changes in the dispersion characteristics and field structures of whistler modes guided by such ducts compared with the case of a collisionless plasma. We present the results of numerical calculations showing such changes in the properties of whistler modes.

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Excitation of electromagnetic waves by a pulsed loop antenna in a magnetoplasma

Kudrin¹,

Shmeleva²,

Ferencz

et al. 2012

Physics of Plasmas

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A study is made of the radiation from a pulsed loop antenna immersed in a cold collisionless magnetoplasma. Using a rigorous solution for the total field of such an antenna, the energy characteristics of its radiation are determined. The radiated energy and its distribution over the spatial and frequency spectra of the excited waves are analyzed as functions of the antenna and plasma parameters. Numerical results referring to the case where the frequency spectrum of the antenna current is concentrated in the whistler frequency range are reported. The results obtained can be useful in understanding the basic features of wave excitation by pulsed sources in a magnetoplasma.

show abstract

Ionization formation of plasma inhomogeneity by the near-zone field of a magnetic-type source in a magnetized plasma

Cited by 4 publications

References 4 publications

Whistler wave radiation from a pulsed loop antenna located in a cylindrical duct with enhanced plasma density

Whistler wave radiation from a pulsed loop antenna located in a cylindrical duct with enhanced plasma density

Whistler waves guided by ducts with enhanced density in a collisional magnetoplasma

Excitation of electromagnetic waves by a pulsed loop antenna in a magnetoplasma

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