Apparatus and method for generating distributed X-rays

摘要

Provided are apparatus and method for generating distributed x-rays. A hot cathode of an electron gun (1) is used in vacuum to generate electron beams (10) having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device (4) is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard the anode target (5), and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.