Geodesic Acoustic Mode Temporal Parameters Effect on the LH-Transition Initiation Possibility in TUMAN-3M Tokamak
| Autor: | V. A. Kornev, L. G. Askinazi, G. I. Abdullina, A. Yu. Yashin, N. A. Zhubr, V. V. Bulanin, S. V. Lebedev, S. V. Krikunov, A. A. Belokurov, A. S. Tukachinsky, A. V. Petrov, D. V. Razumenko |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Physics Tokamak Statistics::Applications Physics and Astronomy (miscellaneous) Series (mathematics) Geodesic Drop (liquid) Mode (statistics) 02 engineering and technology Plasma 021001 nanoscience & nanotechnology 01 natural sciences Statistics::Computation law.invention Computational physics Amplitude Physics::Plasma Physics law 0103 physical sciences Statistics::Methodology 0210 nano-technology Plasma density |
| Zdroj: | Technical Physics Letters. 45:783-785 |
| ISSN: | 1090-6533 1063-7850 |
| DOI: | 10.1134/s1063785019080066 |
| Popis: | Geodesic acoustic mode (GAM) observations in TUMAN-3M tokamak show that in ohmic discharges with low plasma density GAM have intermittent character; transition to high confinement regime (LH-transition) is usually preceded by a short (up to 5 ms) GAM burst series with distinctive frequency drop, or there exists long (up to 30 ms) GAM burst series evolution with several characteristic timescales and varying amplitude. To determinate the effect of GAM temporal parameters on the possibility of LH-transition initiation numerical modeling of plasma density profile evolution under the effect of GAM burst sequence with varying frequency and amplitude was carried out. |
| Databáze: | OpenAIRE |
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