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Applications of noise theory to plas...

Li, Bo.

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Applications of noise theory to plasma fluctuations.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Applications of noise theory to plasma fluctuations./
Author:	Li, Bo.
Description:	75 p.
Notes:	Adviser: Richard D. Hazeltine.
Contained By:	Dissertation Abstracts International68-08B.
Subject:	Physics, Fluid and Plasma. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3277561
ISBN:	9780549166436

Applications of noise theory to plasma fluctuations.
Li, Bo.

Applications of noise theory to plasma fluctuations. - 75 p.

Adviser: Richard D. Hazeltine.

Thesis (Ph.D.)--The University of Texas at Austin, 2007.

Fluctuation phenomena are important to many physical systems, such as the fusion plasma. Noise theory is used to study the time and space correlations of stationary Markovian fluctuations that are statistically homogeneous and isotropic. The relaxation of the fluctuations is modeled by the diffusion equation. The spatial correlations are modeled by the exponential decay. Based on these models, the correlation function and the power spectral density of random fluctuations are calculated. We find that the diffusion process can give rise to the decay of the correlation function and a broad frequency spectrum of random fluctuations. We also find that the fluctuation-induced transport coefficients may be estimated by the correlation length and the correlation time. The theoretical results are compared with the observed plasma density fluctuations from tokamak and helimak experiments.

ISBN: 9780549166436Subjects--Topical Terms:

1018402
Physics, Fluid and Plasma.

Applications of noise theory to plasma fluctuations.
LDR:01768nam 2200277 a 45 001 942141
005 20110519
008 110519s2007 ||||||||||||||||| ||eng d
020 $a 9780549166436
035 $a (UMI)AAI3277561
035 $a AAI3277561
040 $a UMI $c UMI
100 1 $a Li, Bo. $3 1266238
245 1 0 $a Applications of noise theory to plasma fluctuations.
300 $a 75 p.
500 $a Adviser: Richard D. Hazeltine.
500 $a Source: Dissertation Abstracts International, Volume: 68-08, Section: B, page: 5317.
502 $a Thesis (Ph.D.)--The University of Texas at Austin, 2007.
520 $a Fluctuation phenomena are important to many physical systems, such as the fusion plasma. Noise theory is used to study the time and space correlations of stationary Markovian fluctuations that are statistically homogeneous and isotropic. The relaxation of the fluctuations is modeled by the diffusion equation. The spatial correlations are modeled by the exponential decay. Based on these models, the correlation function and the power spectral density of random fluctuations are calculated. We find that the diffusion process can give rise to the decay of the correlation function and a broad frequency spectrum of random fluctuations. We also find that the fluctuation-induced transport coefficients may be estimated by the correlation length and the correlation time. The theoretical results are compared with the observed plasma density fluctuations from tokamak and helimak experiments.
590 $a School code: 0227.
650 4 $a Physics, Fluid and Plasma. $3 1018402
650 4 $a Physics, Theory. $3 1019422
690 $a 0753
690 $a 0759
710 2 $a The University of Texas at Austin. $b Physics. $3 1018659
773 0 $t Dissertation Abstracts International $g 68-08B.
790 $a 0227
790 1 0 $a Hazeltine, Richard D., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3277561