2012
DOI: 10.1063/1.4743020
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Oscillating plasma bubbles. II. Pulsed experiments

Abstract: Time-dependent phenomena have been investigated in plasma bubbles which are created by inserting spherical grids into an ambient plasma and letting electrons and ions form a plasma of different parameters than the ambient one. There are no plasma sources inside the bubble. The grid bias controls the particle flux. There are sheaths on both sides of the grid, each of which passes particle flows in both directions. The inner sheath or plasma potential develops self consistently to establish charge neutrality and… Show more

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Cited by 12 publications
(15 citation statements)
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“…The growth and decay of plasma bubbles and other properties will be shown in three companion papers. [12][13][14] …”
Section: Discussionmentioning
confidence: 98%
See 1 more Smart Citation
“…The growth and decay of plasma bubbles and other properties will be shown in three companion papers. [12][13][14] …”
Section: Discussionmentioning
confidence: 98%
“…[12][13][14] The present paper describes the basic bubble properties and is organized as follows: After describing the experimental setup in Sec. II, the observations of basic probe characteristics and instability properties will be presented in Sec.…”
Section: Introductionmentioning
confidence: 99%
“…This instability is associated with a variety of nonlinear behaviors such as amplitude clipping of the collected electron current and bursty transient behavior as indicated by the fluctuations in electrode current. A high frequency transit time instability has also been extensively studied in inverted fireballs which are present on the interior of large gridded spherical electrodes [236,237,276]. The instability frequency in such cases is related to the electron transit time across the fireball.…”
Section: 52mentioning
confidence: 99%
“…When the grid is biased negatively ions are injected while neutralizing electrons are supplied from either energetic tail electrons of the ambient plasma or an electron emitter inside the bubble. Three companion papers described the basic properties of the bubble plasma and its instability, 10 pulsed bubbles and time-resolved instability measurements, 11 emissive probes for diagnostics and charge neutralization, 12 while the present paper addresses the effect of electron leakage through grids and anisotropic electron flows into grids of different geometries.…”
Section: Introductionmentioning
confidence: 99%