The charged dust solution of Ruban: matching to Reissner–Nordström and shell crossings

We discuss the possibility of using static magnetic traps as an alternative to electrostatic traps for forming and confining structures of charged dust particles in a gas discharge plasma in the context of our study of strongly interacting Coulomb systems. Some advantages of confining structures in magnetic traps over electrostatic ones are shown. Also we provide a review of the related researches carried out first in laboratory conditions, and then under microgravity conditions including the motivation of performing the experiments aboard the International Space Station (ISS). The preparations of a new space experiment «Coulomb-magnet» as well as the differences of a new equipment from previously used are described. We proposed the main tasks of the new experiment as a study of the dynamics and structure of active monodisperse and polydisperse macroparticles in an inhomogeneous magnetic field under microgravity conditions, including phase transitions and the evolution of such systems in the kinetic heating of dust particles by laser radiation. Key words: Coulomb structures, magnetic trap, antiprobotron, diamagnetic particles, dust particles, microgravity.

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Approximate Analytical Solution of Nonlinear Evolution Equations

Selected Topics in Plasma Physics ◽

10.5772/intechopen.93176 ◽

2020 ◽

Author(s):

Laxmikanta Mandi ◽

Kaushik Roy ◽

Prasanta Chatterjee

Keyword(s):

Acoustic Waves ◽

Evolution Equations ◽

Solitary Wave Solution ◽

Perturbation Technique ◽

Nonlinear Evolution Equations ◽

Charged Dust ◽

De Vries ◽

Frame Work ◽

Dust Grain ◽

Charged Ions

Analytical solitary wave solution of the dust ion acoustic waves (DIAWs) is studied in the frame-work of Korteweg-de Vries (KdV), damped force Korteweg-de Vries (DFKdV), damped force modified Korteweg-de Vries (DFMKdV) and damped forced Zakharov-Kuznetsov (DFZK) equations in an unmagnetized collisional dusty plasma consisting of negatively charged dust grain, positively charged ions, Maxwellian distributed electrons and neutral particles. Using reductive perturbation technique (RPT), the evolution equations are obtained for DIAWs.

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Soliton turbulence in electronegative plasma due to head-on collision of multi solitons

Zeitschrift für Naturforschung A ◽

10.1515/zna-2020-0186 ◽

2020 ◽

Vol 75 (12) ◽

pp. 999-1007

Author(s):

Rustam Ali ◽

Anjali Sharma ◽

Prasanta Chatterjee

Keyword(s):

Wave Field ◽

Soliton Solutions ◽

Negative Ions ◽

First Integral ◽

Statistical Properties ◽

Charged Dust ◽

Bilinear Method ◽

Electronegative Plasma ◽

Kdv Equations ◽

First Four Moments

AbstractHead-on interaction of four dust ion acoustic (DIA) solitons and the statistical properties of the wave field due to head-on interaction of solitons moving in opposite direction is studied in the framework of two Korteweg de Vries (KdV) equations. The extended Poincaré–Lighthill–Kuo (PLK) method is applied to obtain two opposite moving KdV equations from an unmagnetized four component plasma model consisting of Maxwellian negative ions, cold mobile positive ions, κ-distributed electrons and positively charged dust grains. Hirota’s bilinear method is adopted to obtain two-soliton solutions of both the KdV equations and accordingly act of soliton turbulence is presented due to head-on collision of four solitons. The amplitude and shape of the resultant wave profile at the point of strongest interaction are obtained. To see the effect of head-on collision on the statistical properties of wave field the first four moments are computed. It is observed that the head-on collision has no effect on the first integral moment while the second, third and fourth moments increase in the dominant interaction region of four solitons, which is a clean indication of soliton turbulence.

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Solitary waves in a dusty adiabatic electronegative plasma

Journal of Plasma Physics ◽

10.1017/s0022377809990614 ◽

2010 ◽

Vol 76 (3-4) ◽

pp. 409-418 ◽

Cited By ~ 7

Author(s):

A. A. MAMUN ◽

K. S. ASHRAFI ◽

M. G. M. ANOWAR

Keyword(s):

Solitary Waves ◽

Vries Equation ◽

Negative Ions ◽

Finite Amplitude ◽

Reductive Perturbation Method ◽

Charged Dust ◽

Electronegative Plasma ◽

Ion Acoustic ◽

Basic Features ◽

Electronegative Plasmas

AbstractThe dust ion-acoustic solitary waves (SWs) in an unmagnetized dusty adiabatic electronegative plasma containing inertialess adiabatic electrons, inertial single charged adiabatic positive and negative ions, and stationary arbitrarily (positively and negatively) charged dust have been theoretically studied. The reductive perturbation method has been employed to derive the Korteweg-de Vries equation which admits an SW solution. The combined effects of the adiabaticity of plasma particles, inertia of positive or negative ions, and presence of positively or negatively charged dust, which are found to significantly modify the basic features of small but finite-amplitude dust-ion-acoustic SWs, are explicitly examined. The implications of our results in space and laboratory dusty electronegative plasmas are briefly discussed.

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A new method of inferring the size, number density, and charge of mesospheric dust from its in situ collection by the DUSTY probe

Atmospheric Measurement Techniques ◽

10.5194/amt-12-1673-2019 ◽

2019 ◽

Vol 12 (3) ◽

pp. 1673-1683 ◽

Cited By ~ 1

Author(s):

Ove Havnes ◽

Tarjei Antonsen ◽

Gerd Baumgarten ◽

Thomas W. Hartquist ◽

Alexander Biebricher ◽

...

Keyword(s):

New Method ◽

Production Model ◽

Dust Particles ◽

Bottom Plate ◽

Charged Dust ◽

Fundamental Parameters ◽

Dust Charge ◽

Analysis Technique ◽

June July ◽

The Impact

Abstract. We present a new method of analyzing measurements of mesospheric dust made with DUSTY rocket-borne Faraday cup probes. It can yield the variation in fundamental dust parameters through a mesospheric cloud with an altitude resolution down to 10 cm or less if plasma probes give the plasma density variations with similar height resolution. A DUSTY probe was the first probe that unambiguously detected charged dust and aerosol particles in the Earth's mesosphere. DUSTY excluded the ambient plasma by various biased grids, which however allowed dust particles with radii above a few nanometers to enter, and it measured the flux of charged dust particles. The flux measurements directly yielded the total ambient dust charge density. We extend the analysis of DUSTY data by using the impact currents on its main grid and the bottom plate as before, together with a dust charging model and a secondary charge production model, to allow the determination of fundamental parameters, such as dust radius, charge number, and total dust density. We demonstrate the utility of the new analysis technique by considering observations made with the DUSTY probes during the MAXIDUSTY rocket campaign in June–July 2016 and comparing the results with those of other instruments (lidar and photometer) also used in the campaign. In the present version we have used monodisperse dust size distributions.

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RADIATING COLLAPSE WITH VANISHING WEYL STRESSES

International Journal of Modern Physics D ◽

10.1142/s0218271805006584 ◽

2005 ◽

Vol 14 (03n04) ◽

pp. 667-676 ◽

Cited By ~ 66

Author(s):

S. D. MAHARAJ ◽

M. GOVENDER

Keyword(s):

Irreversible Thermodynamics ◽

Temperature Profiles ◽

Junction Conditions ◽

Einstein Field Equations ◽

Field Equations ◽

Extended Irreversible Thermodynamics ◽

Recent Approach ◽

Dust Solution ◽

Limiting Case

In a recent approach in modeling a radiating relativistic star undergoing gravitational collapse the role of the Weyl stresses was emphasized. It is possible to generate a model which is physically reasonable by approximately solving the junction conditions at the boundary of the star. In this paper we demonstrate that it is possible to solve the Einstein field equations and the junction conditions exactly. This exact solution contains the Friedmann dust solution as a limiting case. We briefly consider the radiative transfer within the framework of extended irreversible thermodynamics and show that relaxational effects significantly alter the temperature profiles.

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Future lunar missions and investigation of dusty plasma processes on the Moon

Journal of Plasma Physics ◽

10.1017/s0022377813000214 ◽

2013 ◽

Vol 79 (4) ◽

pp. 405-411 ◽

Cited By ~ 15

Author(s):

SERGEY I. POPEL ◽

LEV M. ZELENYI

Keyword(s):

Dusty Plasma ◽

Lunar Surface ◽

Dust Particles ◽

Maximum Height ◽

Charged Dust ◽

The Moon ◽

Plasma System ◽

Lunar Dust ◽

The Impact ◽

Dusty Plasma System

AbstractFrom the Apollo era of exploration, it was discovered that sunlight was scattered at the terminators giving rise to “horizon glow” and “streamers” above the lunar surface. Subsequent investigations have shown that the sunlight was most likely scattered by electrostatically charged dust grains originating from the surface. A renaissance is being observed currently in investigations of the Moon. The Luna-Glob and Luna-Resource missions (the latter jointly with India) are being prepared in Russia. Some of these missions will include investigations of lunar dust. Here we discuss the future experimental investigations of lunar dust within the missions of Luna-Glob and Luna-Resource. We consider the dusty plasma system over the lunar surface and determine the maximum height of dust rise. We describe mechanisms of formation of the dusty plasma system over the Moon and its main properties, determine distributions of electrons and dust over the lunar surface, and show a possibility of rising dust particles over the surface of the illuminated part of the Moon in the entire range of lunar latitudes. Finally, we discuss the effect of condensation of micrometeoriod substance during the expansion of the impact plume and show that this effect is important from the viewpoint of explanation of dust particle rise to high altitudes in addition to the dusty plasma effects.

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