Enviar artigo por via de e-mail Geodesic acoustic modes in noncircular cross section tokamaks
- Autores: Sorokina E.A.1,2, Lakhin V.P.1, Konovaltseva L.V.2, Ilgisonis V.I.1,2,3
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Afiliações:
- National Research Center “Kurchatov Institute,”
- People’s Friendship University of Russia
- National Research Nuclear University “MEPhI,”
- Edição: Volume 43, Nº 3 (2017)
- Páginas: 271-279
- Seção: Tokamaks
- URL: https://journal-vniispk.ru/1063-780X/article/view/186510
- DOI: https://doi.org/10.1134/S1063780X17030126
- ID: 186510
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Resumo
The influence of the shape of the plasma cross section on the continuous spectrum of geodesic acoustic modes (GAMs) in a tokamak is analyzed in the framework of the MHD model. An expression for the frequency of a local GAM for a model noncircular cross section plasma equilibrium is derived. Amendments to the oscillation frequency due to the plasma elongation and triangularity and finite tokamak aspect ratio are calculated. It is shown that the main factor affecting the GAM spectrum is the plasma elongation, resulting in a significant decrease in the mode frequency.
Sobre autores
E. Sorokina
National Research Center “Kurchatov Institute,”; People’s Friendship University of Russia
Autor responsável pela correspondência
Email: sorokina.ekaterina@gmail.com
Rússia, Moscow; Moscow
V. Lakhin
National Research Center “Kurchatov Institute,”
Email: sorokina.ekaterina@gmail.com
Rússia, Moscow
L. Konovaltseva
People’s Friendship University of Russia
Email: sorokina.ekaterina@gmail.com
Rússia, Moscow
V. Ilgisonis
National Research Center “Kurchatov Institute,”; People’s Friendship University of Russia; National Research Nuclear University “MEPhI,”
Email: sorokina.ekaterina@gmail.com
Rússia, Moscow; Moscow; Moscow
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