Plasma dynamics near an earth satellite and neutralization of its electric charge during electron beam injection into the ionosphere

Федоров, В. А.

doi:10.1134/1.952846

Cited by 5 publications

(10 citation statements)

References 3 publications

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“…The solutions obtained in [17,18] were in a good quantitative agreement with the experimental data. This made it possible to explain why the electron beams having the current…”

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frsupporting

confidence: 74%

“…The results obtained have shown [17] that the process of neutralization of Q 0 (t) > 0 is non-stationary, since the functions determining the plasma behavior in the satellite vicinity, as well as Q 0 (t), oscillate with frequencies ω 0 , ω eH , and ω = 2ω eH . After the time interval t ≈ 10/ω 0 ≈ 4 µs the equilibrium state ∂/∂t ≠ 0 was established in a system,…”

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frmentioning

confidence: 91%

“…(4) over the spherical layer volume in the limits from R 0 to R, where R 0 ≤ R ≤ R c , and using the Gaussian theorem, we obtain (15) Taking into account that equality (1) can be presented in the form (16) we rewrite expression (15) as follows: (17) Here, Ψ(R, t) = 4π (R, t)R 2 dR is the function corresponding to the Lagrangian mass variable [26], which in the given case determines the number of plasma ions and their charge Q i (t) = |e|Ψ(R, t) in the volume of a spherical layer of thickness (R c -R).…”

Section: Solution Of the Basic System Of Equationsmentioning

confidence: 99%

“…Theoretical investigations of the change of satellite's Q 0 (t) > 0 and of the dynamics of ionospheric plasma in the satellite vicinity at the electron beam injection with allowance made for H 0 and beam's fields were carried out in papers [17,18]. The results obtained have shown [17] that the process of neutralization of Q 0 (t) > 0 is non-stationary, since the functions determining the plasma behavior in the satellite vicinity, as well as Q 0 (t), oscillate with frequencies ω 0 , ω eH , and ω = 2ω eH .…”

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frmentioning

confidence: 99%

“…which was characterized by the presence of beating [17]. During all the time of satellite's Q 0 (t) neutralization process the condition |eϕ 0 (t)| Ӷ W b took place, and for the mean value of ϕ 0 (t) at the equilibrium state the following relation was found (see (23) [18]):…”

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frmentioning

confidence: 99%

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Neutralization of negative electric charge of a satellite by ionospheric plasma ions

Федоров¹

2005

Cosmic Res

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The dynamics of the process of neutralization of a satellite's negative electric charge by the charge of a layer of positive ions of ionospheric plasma is investigated. The changes in the electric field strength, as well as in the velocity and density of plasma ions, are obtained depending on the initial position of a particle and the distance to the satellite's surface. It is found that under the conditions of accepted approximations, as the time grows unlimitedly, the satellite's charge tends to zero but does not reach this value. The time during which the satellite's electric charge decreases in magnitude as many times as specified is determined. It is shown that the negative charge of a satellite and the charge of a layer of plasma ions can form a structure of a double charged layer type whose lifetime is much longer than the time of its formation.

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“…The solutions obtained in [17,18] were in a good quantitative agreement with the experimental data. This made it possible to explain why the electron beams having the current…”

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frsupporting

confidence: 74%

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frmentioning

confidence: 91%

Section: Solution Of the Basic System Of Equationsmentioning

confidence: 99%

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frmentioning

confidence: 99%

Section: The Initial Stage Of Injection Of Charged Particles' Beam Frmentioning

confidence: 99%

See 3 more Smart Citations

Neutralization of negative electric charge of a satellite by ionospheric plasma ions

Федоров¹

2005

Cosmic Res

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Engineered plasma interactions for geomagnetic propulsion of ultra small satellites

Palmer

Boerner²,

Hughes³

et al. 2013

SPIE Proceedings

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Previous astrophysical studies have explained the orbital dynamics of particles that acquire a high electrostatic charge. In low Earth orbit, the charge collected by a microscopic particle or an ultra-small, low-mass satellite interacts with the geomagnetic field to induce the Lorentz force which, in the ideal case, may be exploited as a form of propellantless propulsion. Efficient mechanisms for negative and positive electrostatic charging of a so-called attosatellite are proposed considering material, geometry, and emission interactions with the ionosphere's neutral plasma with characteristic Debye length. A novel model-based plasma physics study was undertaken to optimize the positive charge mechanism quantified by the system charge-to-mass ratio. In the context of the practical system design considered, a positive charge-to-mass ratio on the order of 1.9×10 -9 C/kg is possible with maximum spacecraft potential equal to the sum of the kinetic energy of electrons from active field emission (+43V) and less than +5V from passive elements. The maximum positive potential is less than what is possible with negative electrostatic charging due to differences in thermal velocity and number density of electronic and ionic species. These insights are the foundation of a practical system design.

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Electrostatic charging of an electrically insulated metal body streamlined by a plasma flow

Федоров¹

2014

Plasma Phys. Rep.

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Plasma dynamics near an earth satellite and neutralization of its electric charge during electron beam injection into the ionosphere

Cited by 5 publications

References 3 publications

Neutralization of negative electric charge of a satellite by ionospheric plasma ions

Neutralization of negative electric charge of a satellite by ionospheric plasma ions

Engineered plasma interactions for geomagnetic propulsion of ultra small satellites

Electrostatic charging of an electrically insulated metal body streamlined by a plasma flow

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