Abstract:
A charged particle lithography system for transferring a pattern onto the surface of a target, comprising a source for generating a charged particle beam, a first chamber housing the source, a collimating system for collimating the charged particle beam, a second chamber housing the collimating system, and a first aperture array element for generating a plurality of charged particle subbeams from the collimated charged particle beam.
Abstract:
The invention relates to a cathode arrangement comprising: a thermionic cathode comprising an emission portion provided with an emission surface for emitting electrons, and a reservoir for holding a material, wherein the material, when heated, releases work function lowering particles that diffuse towards the emission portion and emanate at the emission surface at a first evaporation rate; a focusing electrode comprising a focusing surface for focusing the electrons emitted from the emission surface of the cathode; and an adjustable heat source configured for keeping the focusing surface at a temperature at which accumulation of work function lowering particles on the focusing surface is prevented.
Abstract:
The invention relates to a cathode arrangement comprising: a cathode body housing an emission surface for emitting electrons in a longitudinal direction, wherein the emission surface is bounded by an emission perimeter; a focusing electrode at least partially enclosing the cathode body in a transversal direction and comprising an electron transmission aperture for focusing the electrons emitted by the emission surface, wherein the aperture is bounded by an aperture perimeter, wherein the cathode body is moveably arranged within the focusing electrode over a maximum transversal distance from an aligned position, and wherein the aperture perimeter transversally extends over the emission surface and beyond the emission perimeter over an overlap distance that exceeds the maximum transversal distance.