Effects of magnetic islands on drift wave instability

Autor:	Jiang, P, Lin, Z, Holod, I, Xiao, C
Rok vydání:	2014
Předmět:	Particle and Plasma Physics Physics::Plasma Physics Classical Physics Fluids & Plasmas Molecular Nuclear Atomic Astronomical and Space Sciences
Zdroj:	Physics of Plasmas, vol 21, iss 12 Jiang, P; Lin, Z; Holod, I; & Xiao, C. (2014). Effects of magnetic islands on drift wave instability. Physics of Plasmas, 21(12). doi: 10.1063/1.4903910. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/3m23s9j2
DOI:	10.1063/1.4903910.
Popis:	© 2014 AIP Publishing LLC. Magnetic islands have been implemented in the gyrokinetic toroidal code to study the effects of the islands on microturbulence. The pressure profile flattening is verified in the simulation with the islands. Simulations of ion temperature gradient instability find that different toroidal modes are linearly coupled together and that toroidal spectra become broader when the island width increases. The real frequencies and growth rates of different toroidal modes approach each other with the averaged value independent of the island width. The linear mode structures are enhanced at the island separatrices and weakened at the island centers, consistent with the flattening of the pressure profile inside the islands.
Databáze:	OpenAIRE
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