Peculiarities of the Spatial Power Spectrum of Scattered Electromagnetic Waves in the Turbulent Collision Magnetized Plasma

Jandieri, G. V.; Ishimaru, Akira; Rawat, Banmali S.; Tugushi, Nika

doi:10.2528/pier15081802

Cited by 13 publications

(11 citation statements)

References 19 publications

(24 reference statements)

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“…is a random function of the spatial coordinates. Applying the modified smooth perturbation method [11,12] correlation function of the phase fluctuations of a scattered electromagnetic wave caused by the electron density fluctuations in the high-latitude polar ionospheric region is:…”

Section: Formulationmentioning

confidence: 99%

Scintillation Effects in the Magnetized Plasma

Jandieri¹,

Ishimaru²,

Pištora³

et al. 2019

PIER M

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Statistical characteristics of scattered electromagnetic waves in the turbulent magnetized plasma caused by electron density fluctuations are calculated using complex geometrical optics approximation taking into account both diffraction effects and polarization coefficients. Scintillation level normalized on the variance of the phase fluctuations is analyzed analytically and numerically for small-scale plasma irregularities using the experimental data. New properties of the electromagnetic wave scintillations have been revealed. It is shown that splashes arise in the ionosphere leading to the turbulence and generation of new oscillations (waves and/or Pc pulsations) propagating in space and the terrestrial atmosphere. Turbulence extending in the lower atmospheric layers can influence on the meteorological parameters leading to climate change.

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Section: Formulationmentioning

confidence: 99%

Scintillation Effects in the Magnetized Plasma

Jandieri¹,

Ishimaru²,

Pištora³

et al. 2019

PIER M

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“…x y k k z ϕ = = 0 = applying the modify smooth perturbation method [6,7,9] normal to the direction of the principle plane has the following form: (4) where , , , .…”

Section: Statistical Moments Of Scattered Radiation In the Ionospherimentioning

confidence: 99%

“…Analytical and numerical calculations were carried out for the anisotropic Gaussian spectrum taking into account diffraction effects. Statistical moments of the spatial power spectrum of multiple scattered ordinary and extraordinary waves in the turbulent collision magnetized plasma with aligned anisotropic electron density irregularities were investigated in [6,7] using the modify smooth perturbation method.…”

Section: Introductionmentioning

confidence: 99%

Second Order Statistical Moments of the Power Spectrum of Ionospheric Scintillation

George¹

2017

EARTH

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Paper considers some aspects of the relationship between scintillation level of scattered radiation and anisotropic plasma irregularities in the collision turbulent magnetized plasma. Analytical calculations are carried out using modify smooth perturbation method taking into account both diffraction effects and polarization coefficients of both ordinary and extraordinary waves. Correlation function and the wave structure function of the phase fluctuations are obtained for arbitrary correlation function of electron density fluctuations. Analytical and numerical calculations of the second order statistical moments are carried out for the anisotropic Gaussian correlation function taking into account both anisotropy factor and the inclination angle of the elongated plasma irregularities with respect to the external magnetic field. Scintillation level and the power spectrum of the intensity fluctuations are analyzed for different parameters characterizing anisotropic irregularities.

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“…The features of the spatial power spectrum (SPS) of scattered radiation in magnetized anisotropic plasma in the complex geometrical optics approximation using the perturbation method have been investigated in [4,5]. The power spectra of scintillation signals can yield valuable information about wavy processes in plasma and the structure of the irregularities.…”

Section: Introductionmentioning

confidence: 99%

New Features of the ``Double-Humped Effect'' in the Magnetized Plasma

Jandieri¹,

Ishimaru²,

Kharshiladze³

2017

PIER M

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Abstract-Statistical moments of a scattered field are calculated in the first and second approximations using modified smooth perturbation method. Analytical expressions of both the variance and correlation function are obtained in the principle plane containing wave vector of an incident wave and external magnetic field. Observation points are spaced apart at small distances taking into account diffraction effects. Numerical calculations are carried out for the anisotropic Gaussian spectral function containing both anisotropic factor and the angle of inclination of elongated anisotropic plasma irregularities using the experimental data. It was shown that 3D surface of the correlation function of the phase fluctuation oscillate and these variations are decreased increasing characteristic spatial scale of plasma irregularities. New peculiarities of the "Double-humped Effect" are revealed in the collisionless magnetized plasma. It was shown that spatial scale and the inclination angle of elongated anisotropic plasma irregularities play important role in formation of a gap in the spatial power spectrum. Varying the magneto-ionospheric plasma parameters and values of characteristic spatial scales of anisotropic irregularities the depth of a dip increases and oscillates.

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Peculiarities of the Spatial Power Spectrum of Scattered Electromagnetic Waves in the Turbulent Collision Magnetized Plasma

Cited by 13 publications

References 19 publications

Scintillation Effects in the Magnetized Plasma

Scintillation Effects in the Magnetized Plasma

Second Order Statistical Moments of the Power Spectrum of Ionospheric Scintillation

New Features of the ``Double-Humped Effect'' in the Magnetized Plasma

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