Plotting of closed field lines with an application to coherently excited atoms Free

The problem of plotting closed field lines is considered. To achieve fast and accurate plotting, the local curvature of the field lines must be taken into account. A simple formalism is presented that allows a high degree of precision to be achieved, as demonstrated for the case of a circular field line. Plots of the electronic charge and electronic current distribution of a partially coherent H(n=3) atom are shown as examples.