Is the temperature gradient or the derivative of the density gradient responsible for drift solitons?
In conventional drift wave theory the density gradient k(n) determines the linear phase velocity, and the (electron) temperature gradient k(T) gives rise to a nonlinear term which leads to the existence of soliton-type solutions and solitary waves. It has recently been claimed that it is not k(T) but essentially the derivative of the density gradient, dk(n)/dx, that is relevant. This claim is refuted by means of an expansion scheme involving the drift wave potential.
Bibliographic Reference: Report: IPP 6/287 EN (1990) 16 pp.
Availability: Available from Max-Planck-Institut für Plasmaphysik, 8046 Garching bei Muenchen (DE)
Record Number: 199010733 / Last updated on: 1994-12-01
Original language: en
Available languages: en