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arXiv · 2309.02461

Transition to super-diffusive transport in turbulent plasmas

Matteo Stanzani·Filippo Arlotti·Guido Ciraolo·Xavier Garbet·Cristel Chandre
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Abstract

We investigate the motion of charged particles in a turbulent electrostatic potential using guiding-center theory. By increasing the Larmor radius, the dynamics exhibit close-to-ballistic transport properties. The transition from diffusive to ballistic transport is analyzed using nonlinear dynamics. It is found that twistless invariant tori in the guiding-center dynamics are responsible for this transition, drastically affecting transport properties of charged particles.

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Matteo Stanzani, Filippo Arlotti, Guido Ciraolo, Xavier Garbet, Cristel Chandre. 2023-09-04. Transition to super-diffusive transport in turbulent plasmas. https://arxiv.org/abs/2309.02461

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