Electron magnetohydrodynamic approximations and the magnetic drift wave.
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.
Saleem
H
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PINSTECH (NPD), P.O. Nilore, Islamabad, Pakistan.