Device and method for generating distributed X rays

摘要

A device and a method for generating distributed X rays. Electron beams with an initial kinergety and a motion speed are generated in a vacuum by using a hot cathode, and the initial low-energy electron beams are periodically scanned to make the initial low-energy electron beams in reciprocating deflection. On a movement path of the electron beams, a flow limiting apparatus is set in a reciprocating deflection direction; by using an array opening on the flow limiting apparatus, only part of the electron beams reaching some specific positions are allowed to pass through, so as to form sequential distributed electron beam flows; the electron beam flows are again accelerated by using a high-voltage electric field to make the electron beam flows obtain high energy and bombard a long-strip anode target, and corresponding array distributed focuses and X rays are sequentially generated on the anode target.