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IEEE Transactions on Plasma Science

Issue 2  Part 1 • Date April 2001

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Displaying Results 1 - 25 of 33
  • Guest editorial: dusty plasmas in honor of professor d. asoka mendis on the occasion of his 65th birthday

    Publication Year: 2001, Page(s):146 - 148
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  • Tribute to professor D. Asoka mendis on the occasion of his 65th birthday

    Publication Year: 2001, Page(s):149 - 150
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (151 KB) | HTML iconHTML

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  • Comments by D. Asoka Mendis

    Publication Year: 2001, Page(s): 151
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  • On equilibrium states and dust charging in dusty plasmas

    Publication Year: 2001, Page(s):175 - 178
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB) | HTML iconHTML

    The dust-charge variation process is revisited, accounting for the background density variation associated with electron capture and release by the dust grains. It appears possible to maintain overall charge neutrality in the plasma without any external particle source or sink. It is shown that if the dust charge and density are sufficiently high, the effect of the background electron density vari... View full abstract»

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  • Low-frequency electrostatic instabilities in strongly coupled dusty plasmas

    Publication Year: 2001, Page(s):226 - 230
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    Low-frequency electrostatic dust-wave instabilities in a plasma containing strongly correlated dust grains and ion flow are investigated. The effects of dust charge relaxation and strong Coulomb coupling are shown to be important in determining the instability behavior. The frequency and growth/damping rates of the waves exhibit transition behavior in the parameter space View full abstract»

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  • On the rotation of a dust particulate in an ion flow in a magnetic field

    Publication Year: 2001, Page(s):179 - 181
    Cited by:  Papers (3)
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    Spinning motion of a charged test dust particulate placed in a plasma sheath is studied. The shear of the ion flow velocity in the sheath is found to be responsible for a self-rotation of the particulate, resulting in a formation of a magnetic dipole moment. The presence of an external magnetic field will cause the spinning dust particulate to precess around the magnetic field direction, while the... View full abstract»

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  • Computer simulations of Coulomb crystallization in a dusty plasma

    Publication Year: 2001, Page(s):231 - 237
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB) | HTML iconHTML

    It has been shown experimentally that under the proper conditions, a dusty plasma system can form an ordered, crystalline state known as a Coulomb or dust crystal. This paper uses a computer simulation to model the behavior of such a system while several parameters are changed independently of one another, something that is experimentally difficult to do. The computer program used is a modified Ba... View full abstract»

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  • Molecular dynamics simulations of plasma crystal formation including wake effects

    Publication Year: 2001, Page(s):247 - 255
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB) | HTML iconHTML

    Molecular dynamics (MD) simulations are used to study dusty plasma crystal formation in three dimensions. The grain interaction model includes a spherically symmetric Debye-Huckel potential, an asymmetric wake potential, and a unidirectional external potential representing gravity and the sheath potential. We use a new form for the wake with ion-neutral collisions that reduce the interaction lengt... View full abstract»

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  • The location of very small particles in silane RF discharge

    Publication Year: 2001, Page(s):256 - 260
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    The size and location of silicon particles that grow in a pure silane, capacitively coupled RF discharge, are measured by laser light scattering. The discharge conditions were similar to those typically used to produce amorphous silicon devices, except the temperatures is 300 K. At early discharge time, when the particles are small (D~15 nm), they are located at the middle of the discharge. The la... View full abstract»

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  • On beam-plasma interaction in a dust-electron plasma

    Publication Year: 2001, Page(s):202 - 207
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    The generation of electron plasma waves by low-energy electron beams in a dust-electron plasma, generated by UV induced photoemission or radiative heating of grains, is considered. It is shown that finite amplitude Langmuir waves might be produced due to the usual two-stream (beam-plasma) instability under certain conditions. Langmuir waves may saturate by beam trapping and attain finite amplitude... View full abstract»

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  • Fine-particle clouds controlled in a DC discharge plasma

    Publication Year: 2001, Page(s):274 - 278
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    The spatial shape of fine-particle clouds in a strongly coupled state is controlled by varying a radial potential profile provided by radially segmented electrode for particle levitation and confinement under a completely DC configuration. Fine-particle clouds change their shapes from a usual two-dimensional disk to a three-dimensional cone, and finally concave cone with an increase in the radial ... View full abstract»

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  • Formation of liquidlike and crystalline structures in dusty plasmas

    Publication Year: 2001, Page(s):210 - 215
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    A study of the strongly coupled dusty plasma was carried out over a wide range of plasma pressures and temperatures. The plasma was investigated under conditions of low-pressure inductively coupled radio frequency gas discharge and under thermal plasma conditions at atmospheric pressure. The plasma was also formed from positively charged dust grains in the presence of a flux of ultraviolet photons... View full abstract»

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  • Particle simulation of dust structures in plasmas

    Publication Year: 2001, Page(s):238 - 246
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1108 KB) | HTML iconHTML

    In the Earth's gravity, the dust in plasmas can form into a solid-like state In the plasma sheath. These ordered structures occur due to the balance of the interparticle forces, the gravitational force, and the sheath electric field. We have developed a particle simulation model to study the behavior of strongly coupled dust in plasmas under conditions of normal gravity and microgravity. The model... View full abstract»

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  • Formation of a tripolar vortex in a contaminated electron-positron magnetoplasma with sheared flows

    Publication Year: 2001, Page(s):298 - 301
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    We derive a system of nonlinear equations governing the dynamics of low-frequency electrostatic waves in a magnetized pair plasma with sheared flows that is contaminated by dust grains. For some specific profiles of the equilibrium sheared flows, the nonlinear equations admit a stationary solution in the form of a tripolar vortex. The implications of our investigation to laboratory and space plasm... View full abstract»

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  • Effect of charged dust on Hall current instabilities in the E region

    Publication Year: 2001, Page(s):261 - 266
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    The effect of charged dust on Hall current instabilities in the ion frequency regime is investigated for plasma parameters representative of the lower E region of the ionosphere above about 95 km. Linear kinetic theory is used, and both the longer wavelength Farley-Buneman two-stream instability and the shorter wavelength, higher frequency Hall current instability are considered. Under daytime con... View full abstract»

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  • Effect of radiative cooling on molecular cloud collapse

    Publication Year: 2001, Page(s):307 - 312
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    The effect of the radiative cooling of electrons on the gravitational collapse of molecular clouds consisting of neutral particles along with electrons, ions, and electrically charged dust grains with fluctuating charge is investigated. We include the effect of radiation on the gravitational collapse of the neutrals only through the ion-neutral and grain-neutral collisions. In the absence of therm... View full abstract»

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  • Dust-magnetosonic modes in planetary rings

    Publication Year: 2001, Page(s):283 - 287
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    Dust particles on near-Keplerian orbits in planetary rings drift relative to the co-rotating background plasma. Such relative streaming may drive dust-magnetosonic instabilities. Using a magnetofluid model, we revisit this situation, and include the possibility of polydisperse dust. In particular, we show that the growth rate is lower than anticipated from earlier work and that the instabilities c... View full abstract»

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  • Interaction between a dust cloud and a magnetized plasma in relative motion

    Publication Year: 2001, Page(s):302 - 306
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    The interaction between a dust cloud and a magnetized plasma is investigated by use of an idealized model where the dust particles have uniform size, a uniform density within the dust cloud, and start with the same velocity across the magnetic field in the plasma's rest frame. The interaction is found to be governed by a dimensionless parameter K which is a function of dust cloud, and ambient plas... View full abstract»

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  • Effective distribution functions for electrostatic waves in dusty plasmas with a dust-size distribution

    Publication Year: 2001, Page(s):182 - 185
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB) | HTML iconHTML

    The kinetic theory for the electrostatic modes of dusty plasmas with a distribution of grain sizes is examined. It is assumed that the size distribution predominantly decreases exponentially with the mass for large sizes, and that a power law prevails for small sizes. Thermodynamic equilibrium leads to Maxwellian distributions over velocity with a fixed temperature and continuously varying mass. S... View full abstract»

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  • Dust-acoustic shocks in a strongly coupled dusty plasma

    Publication Year: 2001, Page(s):221 - 225
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    It is shown that the nonlinear propagation of the dust-acoustic waves in a strongly coupled dusty plasma is governed by a Korteweg-de Vries-Burgers (K-dV-Burgers) equation. The latter is derived from a set of generalized hydrodynamic equations for strongly correlated dust grains, as well as the Boltzmann distribution for electrons and ions. Possible stationary solutions of the K-dV-Burgers equatio... View full abstract»

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  • The criteria for dust agglomeration in plasmas

    Publication Year: 2001, Page(s):158 - 163
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    We demonstrate dust particle attraction in a plasma due to plasma particle and neutral particle bombardment. A criteria of charged dust agglomeration is found, where the attraction forces, due to bombardment, exceed the dust repulsion forces due to Coulomb interaction between like charges. Agglomerates in the systems which are optically thin for thermal radiation of dust particles is considered View full abstract»

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  • A dust halo of Enceladus

    Publication Year: 2001, Page(s):271 - 273
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    The physical consequence of the collisional interaction of the Saturnian E-ring particles with the icy satellite Enceladus is examined. It is suggested that Enceladus should be surrounded by an extended halo of dust particles. In association with the generation of impact vapor clouds, an abundance of tiny smoke particles of 10-100 Å diameter might be created and subsequently picked up by the... View full abstract»

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  • Ion field emission from micrometer-sized spherical glass grains

    Publication Year: 2001, Page(s):292 - 297
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB) | HTML iconHTML

    An experimental investigation of ion field emission from spherical glass grains in a 1-10 μm size range is described. A single dust grain is trapped in an electrodynamic quadrupole and charged positively by a monoenergetic ion beam. The energy of these ions (5 keV) results in a high surface potential and high electric field intensity. A limitation of the surface potential due to ion field emiss... View full abstract»

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  • Ring simulation experiment using fine-particle plasmas

    Publication Year: 2001, Page(s):279 - 282
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    We can create a ring structure around a magnetized miniature sphere which is immersed in a fine-particle plasma and rotated around its magnetic dipole axis. Aluminum fine particles generated by a boat method acquire charges by UV light irradiation and are converted to a fine-particle plasma. When the magnetized sphere was rotated in the fine-particle plasma, a ring appeared around the equatorial p... View full abstract»

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  • Nonlinear instabilities in a dusty plasma sheath

    Publication Year: 2001, Page(s):198 - 201
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    The nonlinear coupling between large amplitude ion waves and dust-acoustic waves (DAWs), as well as dust-lattice waves (DLWs), in a dusty plasma sheath is considered. By employing a two-fluid approach, we derive a system of coupled equations for the ion waves and the DAWs/DLWs; the latter are nonlinearly driven by the ion wave ponderomotive force. A normal mode analysis of our nonlinearly coupled ... View full abstract»

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Aims & Scope

IEEE Transactions on Plasma Sciences focuses on plasma science and engineering, including: magnetofluid dynamics and thermionics; plasma dynamics; gaseous electronics and arc technology.

 

 

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Meet Our Editors

Editor-in-Chief
Steven J. Gitomer, Ph.D.
Senior Scientist, US Civilian Research & Development Foundation
Guest Scientist, Los Alamos National Laboratory
1428 Miracerros Loop South
Santa Fe, NM  87505  87505  USA
tps-editor@ieee.org
Phone:505-988-5751
Fax:505-988-5751 (call first)