Secondary electron multiplier made of metal-coated silicate microsieves

摘要

Microsieves are made by irradiating silicates, for example quartz and mica, with heavy ions and then etching them (DE 2708641 C2). Said microsieves are heat-treated for some time (> 1 min) in an inert, oxidising or reducing atmosphere in the range from 150 DEG C to 900 DEG C and a metal layer is deposited on them in such a way that both surfaces have an electrically conducting layer. This converts a microsieve into a serviceable secondary electron multiplier.