Role of Collisions with Neutrals in the Process of Modulational Excitation of Dust Acoustic Perturbations in Dusty Ionosphere

Borisov, N. D.; Kopnin, S. I.; Morozova, T. I.; Popel, S. I.

doi:10.1134/s1063780x19030036

Cited by 8 publications

(3 citation statements)

References 16 publications

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“…Under conditions of diffusion equilibrium, the system of basic equations describing modulational instability has the form (Borisov et al, 2019;Kopnin et al, 2015) (6)…”

Section: Modulational Interaction Of Electromagnetic Wavesmentioning

confidence: 99%

“…In this regard, it is necessary to consider the mechanisms of dust-particle charging and to study the possible formation of dust acoustic oscillations and their excitation due to the modulational instability, the linear stage of the modulational interaction. Kopnin and Popel (2008), Kopnin et al (2015), and Borisov et al (2019) considered the relationship of the formation of low-frequency noise in the ionosphere due to the development of the modulational interaction of electromagnetic waves associated with the excitation of disturbances with frequencies in the region of dust acoustic waves.…”

Section: Introductionmentioning

confidence: 99%

“…This paper proposes that low-frequency noise from meteoroid passages can be explained by the development of modulational instability of electromagnetic waves from meteoric bodies associated with dust acoustic mode (Kopnin and Popel, 2008;Borisov et al, 2019;Kopnin et al, 2015). We consider electromagnetic waves in the radio frequency range of tens and hundreds of megahertz modulated by low-frequency disturbances.…”

Section: Introductionmentioning

confidence: 99%

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Modulational Interaction in a Dusty Plasma of Meteoroid Wakes

Morozova

Popel

2021

Geomagn. Aeron.

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This is a study of the possible modulational instability of electromagnetic waves in meteoroid wakes associated with the dust acoustic mode at altitudes of 80–120 km, which is a linear stage of modulational interaction. The parameters of meteoroid wakes at different altitudes in the Earth’s ionosphere are considered. It is shown that the charging of dust particles of meteoric matter creates conditions for the occurrence of dust acoustic waves. Dust acoustic disturbances are excited due to the modulational instability of electromagnetic waves from the meteoric trail. The influence of neutrals on the development of modulational interaction is taken into account. The concentration of neutrals in meteoric wakes is higher than the concentration of neutrals in the Earth’s ionosphere. It has been found that the condition for the excitation of a dust acoustic wave is satisfied for the typical parameters of dusty plasma of meteoroid wakes at altitudes of 100–120 km. Due to collisions between dust and neutrals, the development of modulation instability is suppressed at altitudes of 80–90 km, while inelastic collisions of neutrals with electrons and ions do not affect the development of modulational instability. The modulational instability of electromagnetic waves can explain the occurrence of low-frequency noise during the passage of meteoric bodies in a frequency range characteristic of dust acoustic waves. It is shown that the modulation instability has time to develop for characteristic temperatures and particle concentrations in meteoroid wakes. Equations for the charging of dust particles in meteoroid wakes are given. It has been found that the dust is positively charged, both in the daytime and at night, due to intense emission currents from the surface of dust particles.

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“…Under conditions of diffusion equilibrium, the system of basic equations describing modulational instability has the form (Borisov et al, 2019;Kopnin et al, 2015) (6)…”

Section: Modulational Interaction Of Electromagnetic Wavesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modulational Interaction in a Dusty Plasma of Meteoroid Wakes

Morozova

Popel

2021

Geomagn. Aeron.

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Dust Plasma in the Region of Active Influence on the Ionosphere

Sivokon

2023

Springer Proceedings in Earth and Environmental Sciences

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Electrophonic noises from meteors and dust acoustic modulational perturbations

Morozova

Popel

2021

J. Phys.: Conf. Ser.

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The article discusses dusty plasmas processes in the Earth’s ionosphere associated with the passages of meteoroids and the spread of the meteor tail. Mechanisms explaining the occurrence of electrophonic noises recorded simultaneously with the passage of meteor bodies are suggested for extremely low frequencies range. It is explained by modulational instability of electromagnetic waves from meteor associated with the dust acoustic mode with characteristic frequencies 0.03–60 Hz. As electromagnetic waves propagate in the dusty plasmas of the meteor tail or in the dusty ionospheric plasmas, dust acoustic waves are excited as a result of the development of modulational instability of electromagnetic waves at characteristic frequencies and as a result, the electromagnetic waves become modulated. At the surface, these perturbations can be converted into sound waves by means of receivers. The growth rates of modulational instability at which the modulational excitation of extremely low-frequency dust acoustic disturbances occur are calculated. The conditions of the development of modulational instability are given. The correlation between observations of ionospheric radio noises and passages of meteors is noticed. Observed data of electrophonic noises include discussing range of frequencies 0.03–60 Hz.

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Role of Collisions with Neutrals in the Process of Modulational Excitation of Dust Acoustic Perturbations in Dusty Ionosphere

Cited by 8 publications

References 16 publications

Modulational Interaction in a Dusty Plasma of Meteoroid Wakes

Modulational Interaction in a Dusty Plasma of Meteoroid Wakes

Dust Plasma in the Region of Active Influence on the Ionosphere

Electrophonic noises from meteors and dust acoustic modulational perturbations

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