Observation of extended poloidal structures in the turbulent edge plasma of the L-2M stellarator |
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| Authors: | G. M. Batanov A. E. Petrov K. A. Sarksyan N. N. Skvortsova O. I. Fedyanin N. K. Kharchev Yu. V. Khol’nov S. V. Shchepetov C. Hidalgo M. Pedrosa B. van Milligen E. Sanchez |
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| Affiliation: | (1) Institute of General Physics, Russian Academy of Sciences, 117942 Moscow, Russia;(2) CIEMAT, 28040 Madrid, Spain |
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| Abstract: | Results are reported from an experimental study of the characteristics of the turbulent edge plasma in the L-2M stellarator. Extended coherent structures are observed to form in the poloidal direction. The poloidal coherence length of the fluctuations reaches 20 cm. The coherence of the fluctuations depends appreciably on the poloidal azimuth and is maximum along the outer edge, as is natural for unstable modes in a toroidal plasma. Pis’ma Zh. éksp. Teor. Fiz. 67, No. 9, 634–639 (10 May 1998) |
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