dorsal/arxiv
View SchemaIntermittent turbulence and turbulent structures in a linear magnetized plasma
| Authors | T. A. Carter |
|---|---|
| Categories | |
| ArXiv ID | physics/0504209 |
| URL | https://arxiv.org/abs/physics/0504209 |
| DOI | 10.1063/1.2158929 |
Abstract
Strongly intermittent turbulence is observed in the shadow of a limiter in the Large Plasma Device (LAPD) at UCLA [W. Gekelman, H. Pfister, Z. Lucky, J. Bamber, D. Leneman, and J. Maggs, Rev. Sci. Inst. {\bfseries 62}, 2875 (1991)]. The amplitude probability distribution function (PDF) of the turbulence is strongly skewed, with density depletion events (or ``holes'') dominant in the high density region and density enhancement events (or ``blobs'') dominant in the low density region. Two-dimensional cross-conditional averaging shows that the blobs are detached, outward-propagating filamentary structures with a clear dipolar potential while the holes appear to be part of a more extended turbulent structure. A statistical study of the blobs reveals a typical size of ten times the ion sound gyroradius and a typical velocity of one tenth the sound speed.
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"abstract": "Strongly intermittent turbulence is observed in the shadow of a limiter in\nthe Large Plasma Device (LAPD) at UCLA [W. Gekelman, H. Pfister, Z. Lucky, J.\nBamber, D. Leneman, and J. Maggs, Rev. Sci. Inst. {\\bfseries 62}, 2875 (1991)].\nThe amplitude probability distribution function (PDF) of the turbulence is\nstrongly skewed, with density depletion events (or ``holes\u0027\u0027) dominant in the\nhigh density region and density enhancement events (or ``blobs\u0027\u0027) dominant in\nthe low density region. Two-dimensional cross-conditional averaging shows that\nthe blobs are detached, outward-propagating filamentary structures with a clear\ndipolar potential while the holes appear to be part of a more extended\nturbulent structure. A statistical study of the blobs reveals a typical size of\nten times the ion sound gyroradius and a typical velocity of one tenth the\nsound speed.",
"arxiv_id": "physics/0504209",
"authors": [
"T. A. Carter"
],
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"physics.plasm-ph"
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"doi": "10.1063/1.2158929",
"title": "Intermittent turbulence and turbulent structures in a linear magnetized plasma",
"url": "https://arxiv.org/abs/physics/0504209"
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