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.
Stanzani, M., Arlotti, F., Ciraolo, G., Garbet, X., Chandre, C. (2024). Transition to superdiffusive transport in turbulent plasmas. PHYSICAL REVIEW. E, 110(2), 1-8 [10.1103/physreve.110.025204].
Transition to superdiffusive transport in turbulent plasmas
Stanzani, Matteo;Arlotti, Filippo;
2024
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.| File | Dimensione | Formato | |
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Stanzani_PLASMASarticle_AcceptedManuscript.pdf
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