Electron exit window foil for electron beam emitter

Abstract

An electron exit window foil for an electron beam emitter having an electron beam generator and operating in a corrosive environment. The electron exit window foil has a sandwich structure with an outer side arranged to face the corrosive environment and an inner side arranged to face the electron beam generator. The sandwich structure comprises, as seen from the outer side to the inner side, a protective layer, for protecting the sandwich structure from the corrosive environment, a supporting layer made of Ti, for providing structural support for the sandwich structure, and a thermally conductive layer made of Al, for conveying heat from the sandwich structure.

Dependencies are inferred from the claim text.