Anomalous particle pinch for collisionless plasma

Terry, P. W.
September 1989
Physics of Fluids B: Plasma Physics;Sep89, Vol. 1 Issue 9, p1932
Academic Journal
The particle transport arising from the convection of nonadiabatic electron density by ion temperature gradient driven turbulence is examined for trapped electron collisionality regimes. In the lower temperature end of this regime, trapped electrons are collisional and the particle flux is outward ( in the direction of the gradients). When the trapped electrons are collisionless, there is a temperature threshold above which the electron temperature gradient driven particle flux changes sign and becomes inward. The magnitude of the nonadiabatic electron contribution to the growth rate is found to be potentially of the same order as the ion contribution.


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