Magnetic lens is used for electron beams focusing.
Axisymmetric problem of DC magnetics.
Relative permittivity of vacuum ε = 1;
Coil current I = 10 A.
Relative permeability of the core μ = 1000;
Charge (electron) q = -1.602e-19 C
Mass (electron) m = 9.109e-31 kg
Initial velocity vy = 300 km/s, vz = 1000 km/s.
Calculate the charged particle trajectory.
Particle trajectory may be calculated using the free tool TrajectoryTracer.
Final velocity vy = 2.2 km/s, vz = 1000 km/s.