Long-distance correlations in TCABR biasing experiments
Autor: | Ivan Cunha Nascimento, P. Duarte, M. Mizintseva, Vladimir E. Moiseenko, Mikhail Gryaznevich, Artour G Elfimov, D.J. Trembach, F. do Nascimento, G. Vorobyov, L.M.F. Schmutzler, D. L. Toufen, S.R.S. Tekieh, F.O. Borges, W.P. de Sá, Zwinglio Guimarães-Filho, V. Bellintani, G. Ronchi, Ricardo Magnus Osorio Galvao, J. H. F. Severo, Edson Kenzo Sanada, R. Arvin, Siamak Mohammadi, Mahmood Ghoranneviss, R.M. de Castro, A P Reis, Juan Iraburu Elizondo, Yu K Kuznetsov, A.V. Melnikov, Munemasa Machida, R. Narayanan, Társis M Germano, L. F. Ruchko, G.P. Canal, Carlos A. Silva, H. F. C. Figueiredo, M. Peres Alonso, Iberê L. Caldas, O. C. Usuriaga |
---|---|
Rok vydání: | 2012 |
Předmět: | |
Zdroj: | Nuclear Fusion. 52:063004 |
ISSN: | 1741-4326 0029-5515 |
Popis: | Long-distance correlations (LDCs) of plasma potential fluctuations in the plasma edge have been investigated in the TCABR tokamak in the regime of edge biasing H-mode using an array of multi-pin Langmuir probes. This activity was carried out as part of the scientific programme of the 4th IAEA Joint Experiment (2009). The experimental data confirm the effect of amplification of LDCs in potential fluctuations during biasing recently observed in stellarators and tokamaks. For long toroidal distances between probes, the cross-spectrum is concentrated at low frequencies f f f = 13–15 kHz and f ∼ 40 kHz and low wave numbers with a maximum at k = 0. The effects of MHD activity on the LDCs in potential fluctuation are investigated. |
Databáze: | OpenAIRE |
Externí odkaz: |