New Theory of Transport Due to Like-Particle Collisions

Cross-magnetic-field transport due to like-particle collisions is discussed for the parameter regime ${\lambda }_{\mathrm{D}}\gg r_{\mathrm{L}}$, where ${\lambda }_{\mathrm{D}}$ is the Debye length and $r_{\mathrm{L}}$ is the characteristic Larmor radius of the colliding particles. A new theory based on collisionally produced E×B drifts predicts a particle flux which exceeds the flux predicted previously, by the factor ${\left(\frac{{\lambda }_{\mathrm{D}}}{r_{\mathrm{L}}}\right)}^2\gg 1$.