Spontaneous spin-up induced by turbulence-driven topological transition of orbits in a tokamak plasma

Shaojie Wang

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arXiv · 1905.08787

Spontaneous spin-up induced by turbulence-driven topological transition of orbits in a tokamak plasma

Shaojie Wang

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Abstract

Spontaneous spin-up are widely observed in tokamak plasmas, which is crucially important for plasma confinement. A kinetic theory is proposed to show that a toroidal rotation of core plasma is induced by the topological transition of orbits driven by turbulent diffusion in a collisionless tokamak plasma. The theoretical prediction agrees well with the well-known Rice-scaling of intrinsic core plasma flow. This new theory predicts an intrinsic core parallel flow of $\sim 100km/s$ for the International Thermonuclear Experimental Reactor.

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Shaojie Wang. 2020-03-20. Spontaneous spin-up induced by turbulence-driven topological transition of orbits in a tokamak plasma. https://arxiv.org/abs/1905.08787

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