Details

Autor(en) / Beteiligte

• Batanov, G. M.
• Borzosekov, V. D.
• Kolik, L. V.
• Konchekov, E. M.
• Malakhov, D. V.
• Petrov, A. E.
• Sarksyan, K. A.
• Stepakhin, V. D.
• Kharchev, N. K.

Titel

Toroidal inhomogeneity of plasma density fluctuations during ECR plasma heating in the L-2M stellarator

Ist Teil von

• Plasma physics reports, 2017-11, Vol.43 (11), p.1052-1064

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Correlation between short-wavelength ( k ⊥ ≈ 20–30 cm –1 ) and long-wavelength ( k ⊥ ≈ 1–2 cm –1 ) plasma density fluctuations in two poloidal cross sections of the stellarator chamber separated by 1/14 or 5/14 of the torus perimeter was studied using collective scattering of radiation of two 75-GHz gyrotrons and radiation of a 37-GHz Doppler reflectometer at an ECR heating power density of 1.6–3.2 MW/m 3 . It is found that excitation of turbulent fluctuations is bursty in character and that fluctuations excited in different L-2M cross sections are uncorrelated. It is shown that the energy of turbulent fluctuations is modulated by a low frequency of 5–20 kHz. An idea is put forward that anomalous transport is toroidally inhomogeneous.