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Magnetic lens

Magnetic lens is used for electron beams focusing.

Problem Type:
Axisymmetric problem of DC magnetics.

Geometry:

Magnetic lens

Given:
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.

Problem:
Calculate the charged particle trajectory.

Solution:
Particle trajectory may be calculated using the free tool TrajectoryTracer.

Results:
Final velocity vy = 2.2 km/s, vz = 1000 km/s.

magnetic lense simulation

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