Density and potential fluctuations in the edge plasma of the Uragan-3m torsatron

Density and potential fluctuations in the edge plasma of the Uragan-3m torsatron

Ion saturation current and floating potential fluctuations are recorded by movable array of 4 Langmuir probes near the boundary of the confinement region in the l = 3/m = 9 Uragan-3M torsatron with an RF produced and heated plasma. On the basis of these data main spectral and time characteristics...

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Bibliographic Details
Date:2002
Main Authors: Sorokovoy, E.L., Chechkin, V.V., Grigor’eva, L.I., Chechkin, A.V., Gonchar, V.Yu., Volkov, E.D., Nazarov, N.I., Tsybenko, S.A., Lozin, A.V., Litvinov, A.P., Kulaga, A.Ye., Mironov, Yu.K., Romanov, V.S., Masuzaki, S., Yamazaki, K.
Format: Article
Language:English
Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2002
Series:Вопросы атомной науки и техники
Subjects:
Magnetic confinement
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/77816
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Density and potential fluctuations in the edge plasma of the Uragan-3m torsatron / E.L. Sorokovoy, V.V. Chechkin, L.I. Grigor’eva, A.V. Chechkin, V.Yu. Gonchar, E.D. Volkov, N.I. Nazarov, S.A. Tsybenko, A.V. Lozin, A.P. Litvinov, A.Ye. Kulaga, Yu.K. Mironov, V.S.Romanov, S. Masuzaki, K. Yamazaki // Вопросы атомной науки и техники. — 2002. — № 5. — С. 6-9. — Бібліогр.: 7 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:Ion saturation current and floating potential fluctuations are recorded by movable array of 4 Langmuir probes near the boundary of the confinement region in the l = 3/m = 9 Uragan-3M torsatron with an RF produced and heated plasma. On the basis of these data main spectral and time characteristics of the low frequency electrostatic turbulence have been derived. The existence of the radial electric field shear and reversal of poloidal phase velocity of the fluctuations at the plasma boundary have been confirmed. The time function of the turbulent E×B particle flux contains intermittent bursts with the amplitude multiply exceeding the average flux. Up to 70% of the total fluctuating flux is carried in these bursts.

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