Publications (6)
Gyrokinetic simulations of the tearing instability
R. Numata, W. Dorland, G. G. Howes +3
Linear gyrokinetic simulations covering the collisional -- collisionless transitional regime of the tearing instability are performed. It is shown that the growth rate scaling with…
Freely decaying turbulence in two-dimensional electrostatic gyrokinetics
T. Tatsuno, G. G. Plunk, M. Barnes +3
In magnetized plasmas, a turbulent cascade occurs in phase space at scales smaller than the thermal Larmor radius ("sub-Larmor scales") [Phys. Rev. Lett. 103, 015003 (2009)]. When…
Investigation of the collisionless plasmoid instability based on gyrofluid and gyrokinetic integrated approach
C. Granier, R. Numata, D. Borgogno +2
In this work, the development of two-dimensional current sheets with respect to tearing-modes, in collisionless plasmas with a strong guide field, is analysed. During their non-lin…
Gyrokinetic simulation of entropy cascade in two-dimensional electrostatic turbulence
T. Tatsuno, M. Barnes, S. C. Cowley +5
Two-dimensional electrostatic turbulence in magnetized weakly-collisional plasmas exhibits a cascade of entropy in phase space [Phys. Rev. Lett. 103, 015003 (2009)]. At scales smal…
Nonlinear Simulation of Drift Wave Turbulence
R. Numata, R. Ball, R. L. Dewar
In a two-dimensional version of the modified Hasegawa-Wakatani (HW) model, which describes electrostatic resistive drift wave turbulence, the resistive coupling between vorticity a…
Ion and electron heating during magnetic reconnection in weakly collisional plasmas
R. Numata, N. F. Loureiro
Magnetic reconnection and associated heating of ions and electrons in strongly magnetised, weakly collisional plasmas are studied by means of gyrokinetic simulations. It is shown t…