Analysis of impurity transport in a magnetic confinement machine

In the present work, the analysis of the transport of impurities was carried out within the framework of the neoclassical theory in a magnetically confined plasma. A well-known model of neoclassical transport obtained from the equation of conservation of momentum (momentum) for impurities proposed by Helander and Fulop is used, considering axisymmetry. This equation is solved by a perturbative method considering the presence of density and temperature gradients, obtaining an equation of the behavior of the density of impurities in the plasma. This equation is solved numerically to analyze the distribution of impurities in the poloidal plane of the cross section for different species. The particular case of the density and temperature profiles of the Tokamak TCABR is analyzed, obtaining results similar to those reported in other machines. (author)