Figure 4

Electron density distribution for the array with n_l = 8 (a) and n_l = 16 (b) when the lattice increment g = 0.4 remains unchanged. Electron density distribution for the array with the lattice increment g = 0.2 (c) and g = 1.0 (d) when n_l = 6 remains unchanged. The energy of the incident electron is E = 0.5 and n_t = 20.