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Measurements of plasma potential and electron temperature fluctuation in a low-temperature magnetized plasma
2001 (English)In: Contributions to Plasma Physics, ISSN 0863-1042, E-ISSN 1521-3986, Vol. 41, no 5, 449-454 p.Article in journal (Refereed) Published
Abstract [en]

Measurements of fluctuations of plasma potential and electron temperature in a toroidal magnetized plasma is carried out by applying a cylindrical probe with insulating end plugs oriented parallel to the B-field in conjunction with another cylindrical probe oriented perpendicularly. Coherency and cross-phase between (V) over tilde (f) and (T) over tilde (e) are estimated, and typically have values close to 0.6 and pi respectively. Power-law spectra are found for frequencies well above the poloidal rotation frequency with spectral index typically around 4.0 for (V) over tilde (f) and around 2.5 for (T) over tilde (e). The density gradient is above the threshold for flute interchange instability, and the results are consistent with theory and global numerical simulations of this plasma.

Place, publisher, year, edition, pages
2001. Vol. 41, no 5, 449-454 p.
Keyword [en]
probe measurements
Identifiers
URN: urn:nbn:se:kth:diva-20993ISI: 000171408400004OAI: oai:DiVA.org:kth-20993DiVA: diva2:339690
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Ratynskaia, Svetlana V.

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