Plasma fluctuations as Markovian noise
| dc.contributor.utaustinauthor | Li, B. | en_US |
| dc.contributor.utaustinauthor | Hazeltine, R. D. | en_US |
| dc.contributor.utaustinauthor | Gentle, K. W. | en_US |
| dc.creator | Li, B. | en_US |
| dc.creator | Hazeltine, R. D. | en_US |
| dc.creator | Gentle, K. W. | en_US |
| dc.date.accessioned | 2017-07-18T20:09:55Z | |
| dc.date.available | 2017-07-18T20:09:55Z | |
| dc.date.issued | 2007-12 | en_US |
| dc.description.abstract | Noise theory is used to study the correlations of stationary Markovian fluctuations that are homogeneous and isotropic in space. The relaxation of the fluctuations is modeled by the diffusion equation. The spatial correlations of random fluctuations are modeled by the exponential decay. Based on these models, the temporal correlations of random fluctuations, such as the correlation function and the power spectrum, 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 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 the tokamak and helimak experiments. | en_US |
| dc.description.department | Physics | en_US |
| dc.description.sponsorship | en_US | |
| dc.identifier | doi:10.15781/T2ZC7S917 | |
| dc.identifier.citation | Li, B., R. D. Hazeltine, and K. W. Gentle. "Plasma fluctuations as Markovian noise." Physical Review E 76, no. 6 (2007): 066402. | en_US |
| dc.identifier.doi | 10.1103/PhysRevE.76.066402 | en_US |
| dc.identifier.issn | 1539-3755 | en_US |
| dc.identifier.uri | http://hdl.handle.net/2152/61101 | |
| dc.language.iso | English | en_US |
| dc.relation.ispartof | UT Faculty/Researcher Works | en_US |
| dc.relation.ispartofserial | Physical Review E | en_US |
| dc.rights | Administrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University. | en_US |
| dc.rights.restriction | open | en_US |
| dc.subject | turbulence | en_US |
| dc.subject | transport | en_US |
| dc.subject | tokamak | en_US |
| dc.subject | edge | en_US |
| dc.title | Plasma fluctuations as Markovian noise | en_US |
| dc.type | Article | en_US |