Dust particle charge in plasma with ion flow and electron depletion near plasma boundaries

A. Douglass; V. Land; L.S. Matthews; T.W. Hyde

doi:10.1063/1.3624552

Dust particle charge in plasma with ion flow and electron depletion near plasma boundaries

A. Douglass, V. Land, L.S. Matthews, T.W. Hyde

Research output: Contribution to journal › Article › Academic › peer-review

25 Citations (Scopus)

Abstract

The charge on micrometer-sized dust particles suspended in plasma above the powered electrode of radio-frequency discharges is studied. Using a self-consistent fluid model, the plasma profiles above the electrode are calculated and the electron depletion towards the electrode, as well as the increasing flow speed of ions toward the electrode are considered in the calculation of the dust particle floating potential. The results are compared with those reported in literature and the importance of the spatial dust charge variation is investigated.

Original language	English
Article number	083706
Number of pages	7
Journal	Physics of Plasmas
Volume	18
Issue number	8
DOIs	https://doi.org/10.1063/1.3624552
Publication status	Published - Aug 2011
Externally published	Yes

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abstract = "The charge on micrometer-sized dust particles suspended in plasma above the powered electrode of radio-frequency discharges is studied. Using a self-consistent fluid model, the plasma profiles above the electrode are calculated and the electron depletion towards the electrode, as well as the increasing flow speed of ions toward the electrode are considered in the calculation of the dust particle floating potential. The results are compared with those reported in literature and the importance of the spatial dust charge variation is investigated.",

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AU - Matthews, L.S.

AU - Hyde, T.W.

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AB - The charge on micrometer-sized dust particles suspended in plasma above the powered electrode of radio-frequency discharges is studied. Using a self-consistent fluid model, the plasma profiles above the electrode are calculated and the electron depletion towards the electrode, as well as the increasing flow speed of ions toward the electrode are considered in the calculation of the dust particle floating potential. The results are compared with those reported in literature and the importance of the spatial dust charge variation is investigated.

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Dust particle charge in plasma with ion flow and electron depletion near plasma boundaries

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