I'm working on an x-ray detector to go into the FIB, and I'm wondering what voltage would be induced by a particle. Imagine I placed the + probe of a multimeter into the FIB chamber, connected the - probe to the chamber wall, then targeted the + probe with the FIB. I believe one gallium ion would induce a current of one electron, but I'm not sure the complete current would be realized in the chamber wall, as some of the enegy converts to radiation (xrays) and some electron sputter off (secondary emission). Basically I'm thinking of how much I might need to protect my electronics, or if I want to measure beam current, what voltage my components would need to be to resist degradation. -- -Nathan _______________________________________________ Hosted by the MEMS and Nanotechnology Exchange, the country's leading provider of MEMS and Nanotechnology design and fabrication services. Visit us at http://www.mems-exchange.org Want to advertise to this community? See http://www.memsnet.org To unsubscribe: http://mail.mems-exchange.org/mailman/listinfo/mems-talk