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Two-dimensional numerical simulations of the effect of background turbulence on 2D resistive magnetic reconnection are presented. For sufficiently small values of the re-sistivity (η) and moderate values of the turbulent power (), the reconnection rate is found to have a much weaker dependence on η than the Sweet-Parker scaling of η 1/2 and is even… (More)

- N F Loureiro, S C Cowley, W D Dorland, M G Haines, A A Schekochihin
- Physical review letters
- 2005

We study the nonlinear evolution of the resistive tearing mode in slab geometry in two dimensions. We show that, in the strongly driven regime (large delta'), a collapse of the X point occurs once the island width exceeds a certain critical value approximately 1/delta'. A current sheet is formed and the reconnection is exponential in time with a growth rate… (More)

- D A Uzdensky, N F Loureiro, A A Schekochihin
- Physical review letters
- 2010

A conceptual model of resistive magnetic reconnection via a stochastic plasmoid chain is proposed. The global reconnection rate is shown to be independent of the Lundquist number. The distribution of fluxes in the plasmoids is shown to be an inverse-square law. It is argued that there is a finite probability of emergence of abnormally large plasmoids, which… (More)

- R Samtaney, N F Loureiro, D A Uzdensky, A A Schekochihin, S C Cowley
- Physical review letters
- 2009

A detailed numerical study of magnetic reconnection in resistive MHD for very large, previously inaccessible, Lundquist numbers (10(4) <or= S <or= 10(8)) is reported. Large-aspect-ratio Sweet-Parker current sheets are shown to be unstable to super-Alfvénically fast formation of plasmoid (magnetic-island) chains. The plasmoid number scales as S(3/8) and the… (More)

- Nuno F. Loureiro, Gregory W. Hammett
- J. Comput. Physics
- 2008

An efficient, iterative semi-implicit (SI) numerical method for the time integration of stiff wave systems is presented. Physics-based assumptions are used to derive a convergent iterative formulation of the SI scheme which enables the monitoring and control of the error introduced by the SI operator. This iteration essentially turns a semi-implicit method… (More)

- K M Schoeffler, N F Loureiro, R A Fonseca, L O Silva
- Physical review letters
- 2014

Particle-in-cell simulations are used to investigate the formation of magnetic fields B in plasmas with perpendicular electron density and temperature gradients. For system sizes L comparable to the ion skin depth d(i), it is shown that B ∼ d(i)/L, consistent with the Biermann battery effect. However, for large L/d(i), it is found that the Weibel… (More)

- N F Loureiro, A A Schekochihin, A Zocco
- Physical review letters
- 2013

Magnetic reconnection in strongly magnetized (low-beta), weakly collisional plasmas is investigated by using a novel fluid-kinetic model [Zocco and Schekochihin, Phys. Plasmas 18, 102309 (2011)] which retains nonisothermal electron kinetics. It is shown that electron heating via Landau damping (linear phase mixing) is the dominant dissipation mechanism. In… (More)

Articles you may be interested in Theory based scaling of edge turbulence and implications for the scrape-off layer width Effects of the parallel electron dynamics and finite ion temperature on the plasma blob propagation in the scrape-off layer The properties of plasma turbulence in a poloidally limited scrape-off layer (SOL) are addressed, with focus on… (More)

- N F Loureiro, A A Schekochihin, D A Uzdensky
- Physical review. E, Statistical, nonlinear, and…
- 2013

A two-dimensional (2D) linear theory of the instability of Sweet-Parker (SP) current sheets is developed in the framework of reduced magnetohydrodynamics. A local analysis is performed taking into account the dependence of a generic equilibrium profile on the outflow coordinate. The plasmoid instability [Loureiro et al., Phys. Plasmas 14, 100703 (2007)] is… (More)

- L G Suttle, J D Hare, +14 authors N Stuart
- Physical review letters
- 2016

We present experiments characterizing the detailed structure of a current layer, generated by the collision of two counterstreaming, supersonic and magnetized aluminum plasma flows. The antiparallel magnetic fields advected by the flows are found to be mutually annihilated inside the layer, giving rise to a bifurcated current structure-two narrow current… (More)