M Mikikian et al 2007 New J. Phys. 9 268 doi:10.1088/1367-2630/9/8/268
Self-excited void instability in dusty plasmas: plasma and dust cloud dynamics during the heartbeat instability
M Mikikian, L Couëdel, M Cavarroc, Y Tessier and L Boufendi
Show affiliationsWhen a three-dimensional dust cloud is present in a plasma, a dust-free region, called a void, is usually obtained in the plasma centre. Under certain conditions, this region exhibits a self-excited unstable behaviour consisting of successive contractions and expansions of its size. In this paper, this low frequency instability (few Hz), called a 'heartbeat', is characterised by various diagnostics. Electrical and optical measurements both correlated with high speed imaging brought to the fore the main features of this instability. Forces involved in the void existence are an inward electrostatic force and an outward ion drag one. The force balance ensures an open void but this equilibrium can be disturbed, leading to the observed instabilities. As these forces are strongly dependent on local ionisation conditions, correlations between physical processes in the plasma volume and the dust cloud motion are investigated through experimental results.
- PACS
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52.27.Lw Dusty or complex plasmas; plasma crystals
52.70.Kz Optical (ultraviolet, visible, infrared) measurements
- Subjects
- Dates
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Issue 8 (August 2007)
Received 30 March 2007
Published 15 August 2007
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Self-excited void instability in dusty plasmas: plasma and dust cloud dynamics during the heartbeat instability
M Mikikian et al 2007 New J. Phys. 9 268
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-
Near radially symmetric solutions of an inverse problem in geometric optics
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-
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-
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-
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-
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