Drift and Wave Transport of Plasma Particles

A model of anomalous transport in the non-uniform plasma induced by a drift wave is suggested in the hydrodynamic limit (small value of the ion cyclotron radius). Based on the model for the isothermal plasma without collision under the uniform magnetic field with an assumption of constant concentration gradient it is shown that for the particle flow created by the drift wave the relation which is usually postulated as Bohm’s diffusion is satisfied. Unlike the known Bohm’s formula, these expressions contain both parameters of magnetized plasma (temperature, magnetic induction, characteristic length of plasma non-uniformity) and parameters of the drift wave (amplitude, wave vector) and also a non-dimensional parameter ζ - the wave phase velocity to ion thermal velocity ratio. With additional assumptions involved, it is shown that the model can explain some experimentally observed peculiarities of the plasma impurities transport - a phenomenon of the transport processes non-locality and the so-called ballistic (fast) diffusion.