Electron magnetohydrodynamic approximations and the magnetic drift wave

摘要

It is shown that the approximations of electron magnetohydrodynamics (EMHD) are too restrictive to be realistic for at least plasmas-of low-Z materials (for example, hydrogen and its isotopes). The simultaneously used assumptions of stationary ions and inertialess electrons are not self-consistent, especially within the framework of local theory. As a result the application of EMHD to describe the pure transverse magnetic drift wave suffers from weaknesses and such a mode does not seem to exist in magnetized plasmas. [S1063-651X(99)10104-1]. [References: 17]