First‐ and Second‐Order Magnetic Optics of a Circular‐Pole Uniform‐Field Magnet. I

A calculation has been made of both the first‐ and second‐order optics of a uniform‐field circular‐pole magnet, using the impulse approximation for the fringe‐field effects. From this, the first‐ and second‐order resolution has been derived over the entire focal plane of the magnet as a function of the angle of deflection and the momentum of the particle.