Comparison of orbit trajectories and properties when scattering is included or omitted. Trajectories which (panel a) omit or (panel b) include scattering for three cases initialised at different radial distances along the midplane of the separator (x₀ = 0.01, 0.1, 1  m seen as dark blue, blue and light blue lines respectively) are overlaid with topological features of the MHD simulation (for key see Fig. 1). Panel c: evolution of kinetic energy of each of the orbits, while panel d: pitch angle evolution over time; cases which include scattering are shown as solid lines, while those which omit scattering are shown using dashed lines.