Formation of plasmoid chains in fusion relevant plasmas

Joint Varenna-Lausanne International Workshop 2014

Comisso, L.^1,2 ; Grasso, D.^1,2 ; Waelbroeck, F.L.^3

Dipartimento Energia, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino

10129, Italy^1

Istituto Dei Sistemi Complessi - CNR, Via dei Taurini 19, Rome

00185, Italy^2

Institute for Fusion Studies, University of Texas at Austin, Austin

TX

78712-1060, United States^3

关键词: Boundary perturbations;    Magnetic reconnections;    Plasma resistivity;    Plasmoid;    Plasmoids;    Slab plasmas;    Small amplitude;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/561/1/012004/pdf
DOI  :  10.1088/1742-6596/561/1/012004

来源: IOP

【 摘 要 】

The formation of plasmoid chains is explored for the first time within the context of the Taylor problem, in which magnetic reconnection is driven by a small amplitude boundary perturbation in a tearing-stable slab plasma equilibrium. Numerical simulations of a magnetohydrodynamical model of the plasma show that for very small plasma resistivity and viscosity, the linear inertial phase is followed by a nonlinear Sweet-Parker evolution, which gives way to a faster reconnection regime characterized by a chain of plasmoids instead of a slower Rutherford phase.