Charged particle beam control element, method of fabricating charged particle beam control element, and charged particle beam apparatus

Abstract

An inspection method using an electron beam. Emitted charged particles from an electron gun located inside a primary column are accelerated to form a primary beam. A cross section of the primary beam is shaped a desired shape by a primary optical system located inside the primary column. A trajectory of the primary beam is deflected using a primary deflector located inside the primary column. A sample is illuminated using the primary beam, the sample being on a stage to which a retarding voltage is applied. At least one of secondary electrons, reflected electrons or backwardly scattered electrons that are emerging from the sample on the stage are accelerated toward a second column to form a secondary beam. A trajectory of the secondary beam is deflected using a secondary deflector located inside the secondary column. The secondary beam is guided to a detector located inside the secondary column.