Patent ID: 6242749
Filing Date: 2001-06-05
Classification: H01J

Abstract:
An ion-beam source with uniform distribution of ion-current density on the surface of an object being treated, comprising: a sealed housing connected to a source of vacuum; an anode means and a cathode means located in said housing, said anode means being spaced from said cathode means; an object to be treated having a surface to be treated facing said cathode means, a working gas supply means for the supply said working gas into a space between said anode means and said cathode means; means for applying to said anode means a potential positive with respect to said cathode means; a plurality of individual cells, each having an individual closed-loop ion-emitting slit and an individual magnet for generating a magnetic field in said individual ion-emitting slit, said means for applying to said anode means a potential positive with respect to said cathode means generating an electric field across said individual closed-loop ion-emitting slit in a direction perpendicular to said magnetic field, and means for providing uniform distribution in ion-beam current density on said surface of said object.