Variations of the electron probability density distribution on the detector plane with impact radius ρ at different scaled energies. The detector is located at z = −0.5 plane. The scaled electric field gradient is α = 3.0. The scaled energies are (a) ε = 0, (b) ε = −0.2, (c) ε = −0.4, (d) ε = −0.6, (e) ε = −0.7, and (f) ε = −0.74 respectively.