Imaging of core electron temperature fluctuations of tokamak plasmas

Author

Deng, B.H. ; Brower, D.L. ; Cima, G. ; Domier, C.W. ; Donné, A. J H ; Luhmann, N.C., Jr. ; Oyevaar, Th. ; Wootton, A.

Author_Institution

Dept. of Appl. Sci., California Univ., Davis, CA, USA

Volume

30

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

72

Lastpage

73

Abstract

Imaging techniques applied to plasma turbulence data have lead to the discovery of unexpected two-dimensional patterns in the fluctuation levels. The data are obtained in the core of tokamak plasmas, using the novel technique of correlation intensity interferometry. Low-frequency fluctuations, usually associated with tearing modes, are not only found as expected near the q = 2 surface, but also on the midplane outside this surface. Higher frequency fluctuations, usually associated with the drift wave family, are poloidally localized

Keywords

Tokamak devices; interferometry; plasma fluctuations; plasma magnetohydrodynamics; plasma toroidal confinement; plasma turbulence; tearing instability; 0 to 250 kHz; Tokamak plasmas; core electron temperature fluctuations imaging; correlation intensity interferometry; drift wave family; low-frequency fluctuations; midplane; plasma turbulence; poloidally localised higher frequency fluctuations; tearing modes; tokamak plasmas; two-dimensional patterns; Electrons; Fluctuations; Frequency; Magnetic field measurement; Plasma diagnostics; Plasma measurements; Plasma temperature; Plasma transport processes; Plasma waves; Tokamaks;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2002.1003929

Filename

1003929