Here's one patent: http://google.ch/patents/US3944869 that says:
"For many years, display devices such as NIXIE tubes have used mercury vapor along with the normal inert gas content to minimize cathode sputtering" There are more patents on the use of Mercury and Nixies that tells the same story, I just dug up this one as I know that Burroughs have some patents in this area. There is more to read in other patents, and I think also in some old Burroughs documents, on the effect of Mercury and sputtering. /Martin -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/57a5d5c0-0274-4800-9adc-85ae9c3244fb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
