ELECTRIC FIELD EMITTING ELECTRON SOURCE AND PRODUCTION METHOD THEREFOR

摘要

The purpose of the present invention is to provide an electric field emitting electron source using a hexaboride single crystal having stable electron emission characteristics. The electric field emitting electron source (20) is configured such that a tip work piece (15) is cut out from a single crystal growth body (13) of hexaboride grown in a melt (liquid phase), and the forward extremity thereof in the length direction is sharpened and cleaned in order to form a crystal face terrace (facet) formed orthogonally to a crystallographic axis.