Abstract. The collision effect of cross-field transport in a radial electric field for ions and electrons is studied and the transport equations are obtained, leading to a better understanding of the relation of collision effect with a radial electric field. The collisional transport equations indicate that there is a radial current generated by the damping of ExB drift. This current is in the direction of the radial electric field, so it will reduce the radial electric field and is unfavorable for forming the H mode.
IAEA 2001