The influence of magnetic fluctuations on collisional drift-wave turbulence
A two-dimensional isothermal collisional drift-wave turbulence model including magnetic fluctuations was studied numerically. The model has as limits the electrostatic collisional drift-wave and two-dimensional magnetohydrodynamic systems. The electromagnetic and electrostatic regimes for thermal gradient-driven (drift-wave) turbulence are decided by parameter associated with the parallel and background profile scale lengths. The principal effect of the magnetic fluctuations is magnetic induction in the parallel force balance for electrons, which is linear. This diminishes the adiabaticity of the system by reducing the immediacy of the dissipative coupling between the density and electrostatic potential fluctuations. The transport was still found to be dominantly electrostatic, although its level decreased due to reduced coherency in the coupling between ExB velocity and density fluctuations.
Bibliographic Reference: Article: Physics and Plasmas, Vol. 3 (1996) No. 11, pp. 3912-3931
Record Number: 199611503 / Last updated on: 1997-01-16
Original language: en
Available languages: en