Elliptical dust growth in astrophysical plasmas

Craig R. Stark, H. E. Potts, D. A. Diver

Research output: Contribution to journalArticle

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Abstract

Elongated dust grains exist in astrophysical plasmas. Anisotropic growth of elliptical dust grains, via plasma deposition, occurs if the deposited ions are non-inertial. In reality the extent of such growth depends upon the initial kinetic energy of the ions and the magnitude of the electric field in the sheath. Simulations of the dynamics of the ions in the sheath are reported, showing how elliptical growth is related to the initial eccentricity and size of the seed relative to the sheath length. Consequences for the eventual fate of elliptical dust are then discussed.
Original languageEnglish
Pages (from-to)365-370
Number of pages6
JournalAstronomy and Astrophysics
Volume457
Issue number2
DOIs
Publication statusPublished - Oct 2006

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sheaths
astrophysics
dust
plasma
ion
ions
eccentricity
kinetic energy
electric field
seeds
seed
electric fields
simulation

Cite this

Stark, Craig R. ; Potts, H. E. ; Diver, D. A. / Elliptical dust growth in astrophysical plasmas. In: Astronomy and Astrophysics. 2006 ; Vol. 457, No. 2. pp. 365-370.
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Elliptical dust growth in astrophysical plasmas. / Stark, Craig R.; Potts, H. E.; Diver, D. A.

In: Astronomy and Astrophysics, Vol. 457, No. 2, 10.2006, p. 365-370.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Elliptical dust growth in astrophysical plasmas

AU - Stark, Craig R.

AU - Potts, H. E.

AU - Diver, D. A.

PY - 2006/10

Y1 - 2006/10

N2 - Elongated dust grains exist in astrophysical plasmas. Anisotropic growth of elliptical dust grains, via plasma deposition, occurs if the deposited ions are non-inertial. In reality the extent of such growth depends upon the initial kinetic energy of the ions and the magnitude of the electric field in the sheath. Simulations of the dynamics of the ions in the sheath are reported, showing how elliptical growth is related to the initial eccentricity and size of the seed relative to the sheath length. Consequences for the eventual fate of elliptical dust are then discussed.

AB - Elongated dust grains exist in astrophysical plasmas. Anisotropic growth of elliptical dust grains, via plasma deposition, occurs if the deposited ions are non-inertial. In reality the extent of such growth depends upon the initial kinetic energy of the ions and the magnitude of the electric field in the sheath. Simulations of the dynamics of the ions in the sheath are reported, showing how elliptical growth is related to the initial eccentricity and size of the seed relative to the sheath length. Consequences for the eventual fate of elliptical dust are then discussed.

U2 - 10.1051/0004-6361:20064922

DO - 10.1051/0004-6361:20064922

M3 - Article

VL - 457

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EP - 370

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

SN - 0004-6361

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ER -