Double-layer-relevant laboratory results

Diebold, D.; Forest, Chris E.; Hershkowitz, N.; Hsieh, Ming‐Chang; Intrator, T.; Kaufman, D.; Kim, Gon−Ho; Lee, S.-G.; Ménard, J.

doi:10.1109/27.199499

Cited by 11 publications

(8 citation statements)

References 64 publications

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“…Such phenomena have been observed in laboratory generated discharges at different gas pressures, including atmospheric pressure [2], [3]. On the other hand, multilayer structures have been observed in both space plasmas and low-pressure glow discharges, usually in the form of a double-layer or multiple double-layers [4]. They are also known as striation [1].…”

Section: Multilayer Plasma Patterns In Atmosphericmentioning

confidence: 98%

Multilayer plasma patterns in atmospheric pressure glow discharges

Yang

Shi

Harry

et al. 2005

IEEE Trans. Plasma Sci.

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Section: Multilayer Plasma Patterns In Atmosphericmentioning

confidence: 98%

Multilayer plasma patterns in atmospheric pressure glow discharges

Yang

Shi

Harry

et al. 2005

IEEE Trans. Plasma Sci.

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“…Observations in the ionosphere and magnetosphere have shown that plasma is not only flowing due to the expanding magnetic field lines; double layers (DLs) set up electric fields parallel to the magnetic field in the polar cavity and accelerate the plasma ions and electrons to supersonic speeds and beams [3][4][5]. Over the years, DLs have been studied in great detail both theoretically and experimentally, as described in several reviews [6][7][8] and more specific works [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The effects of downstream magnetic field on current-free double layers and beam formation in the Njord helicon plasma device

Fredriksen¹,

Mishra²,

Byhring³

2010

Plasma Sources Sci. Technol.

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The Njord device was constructed with the aim of investigating instabilities and turbulence in plasmas with flows and beams, which are common also in space plasmas. Njord is an inductively coupled helicon plasma device with 13.56 MHz RF power inserted into the working gas by means of a saddle antenna through a 13.8 cm inner diameter Pyrex tube. The source plasma expands through a 7 cm long and 20 cm wide port into a 0.6 m diameter and 1.2 m long chamber. Two magnetic field coils around the source and one additional downstream coil produce a magnetic field of about 25 mT at maximum. We have characterized current-free double layers in argon plasmas, and we find that they are generated at the position where the plasma expands into the main chamber. Further, the effect of shaping the magnetic field from an expanding one to a mirror shaped field by means of the downstream coil has been investigated. The downstream density and the plasma potential increase significantly when all the magnetic field lines in the source are passing also through the port-dome intersection without intersecting the port walls. The ion beam disappears when the plasma potential increases up to a potential similar to that in the source.

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“…1 highlights a distinct nature of self-organization. The multilayer plasma pattern is sometimes known as striation structure [5], [6]. In our experiments, the four striated atmospheric glow discharges were very stable and appeared stationary even though their excitation was at a higher frequency.…”

mentioning

confidence: 66%

“…Broadly there are two different groups of self-organized patterns, namely: 1) self-organization of multiple plasmas simultaneously sustained between two parallel electrodes [3], [4], and 2) self-organized multilayer patterns developed along the length of a single plasma column [5], [6]. In this paper, we report observation of multilayer structures in each of several self-organized atmospheric pressure glow discharges (APGD) sustained simultaneously with a single power source.…”

mentioning

confidence: 97%