Interaction between a magnetic island and turbulence

Choi, M.

doi:10.1007/s41614-021-00058-w

Cited by 22 publications

(19 citation statements)

References 134 publications

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“…2009, 2011; Agullo et al. 2017 a , b ; Choi 2021). These latter subjects are somewhat related (see, e.g.…”

Section: Model Equations and Linear Problem: General Featuresmentioning

confidence: 99%

“…The operational definition by which the reconnected flux can be computed according to (2.9) has been refined over time in different contexts, which also keep account of observational difficulties related to issues encountered in both direct experimental and numerical measurements (see Parker 1957;Petschek 1964;Syrovatskii 1966a,b;Bratenahl & Yeates 1970;Baum, Bratenahl & White 1971;Parker 1973;Schnack 1978;Park, Monticello & White 1984;Chen et al 1997;Hesse, Forbes & Birn 2005;Comisso & Bhattacharjee 2016;Grasso et al 2020). For the purpose of the present discussion, we here rely on the formal definition: combination of (2.9) with (2.7) via Faraday's law and Kelvin-Stokes theorem of circulation allows us to write…”

Section: Eigenvalue Of the Linear Problem And Reconnection Rate In Te...mentioning

confidence: 99%

“…In addition to the large number of works developed over the years on these subjects, attention has also been recently drawn to the role that a background plasma turbulence can have in driving the growth of NTMs (see, e.g. Muraglia et al 2009Muraglia et al , 2011Agullo et al 2017a,b;Choi 2021). These latter subjects are somewhat related (see, e.g.…”

Section: Magnetic Reconnection In Tearing Modes and Formation Of Magn...mentioning

confidence: 99%

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Microscopic scales of linear tearing modes: a tutorial on boundary layer theory for magnetic reconnection

et al. 2022

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We revise in detail and in a pedagogical way the analysis of the boundary layer theory of warm tearing modes in slab, reduced magnetohydrodynamics (MHD), when magnetic reconnection is driven by electron inertia and/or resistivity, and ion-sound Larmor radius effects are included. By comparison with the numerical solution of the corresponding eigenvalue problem, we interpret these results by means of a heuristic approach, which in the warm-electron regime, we show to be in general not feasible without knowledge of the scaling of the gradient of the magnetic flux function, differently from what happens in the cold-electron regimes. We put in evidence for a non-trivial relation between the first derivative of the magnetic flux function and of the velocity parallel to the neutral line, evaluated in its proximity, by thus providing insight to the multiple boundary layer analysis that Pegoraro & Schep (Plasma Phys. Control. Fusion, vol. 28, 1986, p. 647) first showed to be required in warm-tearing regimes. In this way, we also suggest and justify a general operational definition of the reconnecting layer width and we discuss the linear appearance of microscopic scales related to the gradients of the eigenfunctions of the tearing modes.

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“…2009, 2011; Agullo et al. 2017 a , b ; Choi 2021). These latter subjects are somewhat related (see, e.g.…”

Section: Model Equations and Linear Problem: General Featuresmentioning

confidence: 99%

Section: Eigenvalue Of the Linear Problem And Reconnection Rate In Te...mentioning

confidence: 99%

Section: Magnetic Reconnection In Tearing Modes and Formation Of Magn...mentioning

confidence: 99%

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Microscopic scales of linear tearing modes: a tutorial on boundary layer theory for magnetic reconnection

et al. 2022

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“…Topical collection "U40 winner papers (U40)" is papers of AAPPS-DPP Young Researcher Award winners and published two articles in 2019 (Takahashi 2019;Feng 2019), one in 2020 (Zhong et al 2020), one in 2021 (Choi 2021) and five in 2022 (Wang 2022;Takeda et al 2022;Zhou et al 2022;Amano et al 2022).…”

Section: Volume 6 Publicationmentioning

confidence: 99%

Editorial : Reviews of Modern Plasma Physics: Volume 6

Kikuchi

2023

Rev. Mod. Plasma Phys.

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“…of the MHD tearing instability, microturbulence, and, eventually, an Alfvénic mode and a zonal flow. Such interlinked physical systems [15] can be addressed only within a global nonlinear framework and represent the main target of our work.…”

Section: Tearing Instability and Electromagnetic Turbulencementioning

confidence: 99%

Gyrokinetic particle-in-cell simulations of electromagnetic turbulence in the presence of fast particles and global modes

Mishchenko,

Bottino,

Hayward-Schneider

et al. 2022

Preprint

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Global simulations of electromagnetic turbulence, collisionless tearing modes, and Alfvén Eigenmodes in the presence of fast particles are carried out using the gyrokinetic particle-in-cell codes ORB5 (E. Lanti et al, Comp. Phys. Comm, 251, 107072 (2020)) and EUTERPE (V. Kornilov et al, Phys. Plasmas, 11, 3196 (2004)) in tokamak and stellarator geometries. Computational feasibility of simulating such complex coupled systems is demonstrated.

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Interaction between a magnetic island and turbulence

Cited by 22 publications

References 134 publications

Microscopic scales of linear tearing modes: a tutorial on boundary layer theory for magnetic reconnection

Microscopic scales of linear tearing modes: a tutorial on boundary layer theory for magnetic reconnection

Editorial : Reviews of Modern Plasma Physics: Volume 6

Gyrokinetic particle-in-cell simulations of electromagnetic turbulence in the presence of fast particles and global modes

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