Charging and dynamics of a dust grain in the wake of another grain in flowing plasmas

被引：60

作者：

Miloch, W. J. ^{[1
]}

Kroll, M. ^{[2
]}

Block, D. ^{[2
]}

机构：

[1] Univ Tromso, Dept Phys & Technol, N-9037 Tromso, Norway

[2] Univ Kiel, IEAP, D-24098 Kiel, Germany

来源：

PHYSICS OF PLASMAS | 2010年 / 17卷 / 10期

关键词：

PARTICLES; MOLECULES; CRYSTAL; FORCES;

D O I：

10.1063/1.3488252

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The charging of a dust grain in supersonic plasma flows in the wake of another grain is studied by numerical simulations. While entering the Mach cone originating from the upstream grain, the grain is discharged by scattered ions. Electrostatic forces acting on the grain in the wake will move it to the stable position in the wake at a distance close to the electron Debye length from the upstream grain. The onset for discharging can be used to estimate the ion flow speed in the system. The simulations are carried out with the DiP3D code, a three-dimensional particle-in-cell code where both electrons and ions are represented as numerical particles [W. J. Miloch et al., Nonlinear Processes Geophys. 14, 575 (2007); New J. Phys. 11, 043005 (2009)]. (C) 2010 American Institute of Physics. [doi:10.1063/1.3488252]

引用

页数：9

共 31 条

[11] Structure and dynamics of dust in streaming plasma: Dust molecules, strings, and crystals
Lampe, M
Joyce, G
Ganguli, G
[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE, 2005, 33 (01) : 57 - 69
[12] Interactions between dust grains in a dusty plasma
Lampe, M
Joyce, G
Ganguli, G
Gavrishchaka, V
[J]. PHYSICS OF PLASMAS, 2000, 7 (10) : 3851 - 3861
[13] Nature of the force field in plasma wakes
Lapenta, G
[J]. PHYSICAL REVIEW E, 2002, 66 (02):
[14] Plasma kinetics around a dust grain in an ion flow
Maiorov, SA
Vladimirov, SV
Cramer, NF
[J]. PHYSICAL REVIEW E, 2001, 63 (01):
[15] POLARIZED SUPERSONIC PLASMA-FLOW SIMULATION FOR CHARGED BODIES SUCH AS DUST PARTICLES AND SPACECRAFT
MELANDSO, F
GOREE, J
[J]. PHYSICAL REVIEW E, 1995, 52 (05): : 5312 - 5326
[16] Structure and stability of the plasma crystal
Melzer, A
Schweiger, VA
Schweigert, IV
Homann, A
Peters, S
Piel, A
[J]. PHYSICAL REVIEW E, 1996, 54 (01): : R46 - R49
[17] Transition from attractive to repulsive forces between dust molecules in a plasma sheath
Melzer, A
Schweigert, VA
Piel, A
[J]. PHYSICAL REVIEW LETTERS, 1999, 83 (16) : 3194 - 3197
[18] Numerical studies of ion focusing behind macroscopic obstacles in a supersonic plasma flow
Miloch, W. J.
Trulsen, J.
Pecseli, H. L.
[J]. PHYSICAL REVIEW E, 2008, 77 (05):
[19] Numerical simulations of the charging of dust particles by contact with hot plasmas
Miloch, W. J.
Pecseli, H. L.
Trulsen, J.
[J]. NONLINEAR PROCESSES IN GEOPHYSICS, 2007, 14 (05) : 575 - 586
[20] Charging of insulating and conducting dust grains by flowing plasma and photoemission
Miloch, W. J.
Vladimirov, S. V.
Pecseli, H. L.
Trulsen, J.
[J]. NEW JOURNAL OF PHYSICS, 2009, 11

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