Pulsing a charged particle beam by energy modulation and dispersive deflection

A method for the production of a variable duty cycle pulsed electron beam is investigated theoretically. A longitudinally uniform beam is passed through a radio frequency cavity that introduces energy modulation of the beam particles. The beam then enters a magnetic deflection array with dispersive properties that allow transmission of particles with momentum within a range selected by the position of a beam stop within the array. The transmitted portion of the beam exits the array along the same beam line with no angular or positional dispersion.