Figure 1
From: A new approach for fast field calculation in electrostatic electron lens design and optimization
(a) Illustration of the rotationally symmetrical electrostatic lens system with 4 electrodes in a 3D representation. (b) Schematic depicting the rotationally symmetrical electrostatic lens system with 4 electrodes in a 2D representation. Here, \(T_{j}\), \(R_{j}\), and \(V_{{EL_{j} }}\) denote the thicknesses, radii, and voltages at each electrode. \(G_{j}\) represents the gaps between two consecutive electrodes.
