On Wednesday, 2 October 2013 15:55:46 UTC+1, AlexTsekenis wrote: > Nick, thank you for the swift reply. > > I've scanned in p340, here <http://s23.postimg.org/t1sp4km0b/page196.jpg>. > The book is the exact one in the reference. > > On this page Weston explains the impact of digit cycling on lifespan. The > point of a gradual rather than abrupt end of life is also made. However I > was not able to find the aforementioned 50% threshold. I also checked p240 > and p140. Could it be that it is somewhere else in this chapter? I > am conscious this would appear as pedantic, but the quoted end of life due > to loss of luminosity comes down to this important threshold. > Finally checked this - you are right - the actual references to end-of-life are in paragraph 2 of page 334 where he considers EOL to be either a discontinuous glow over the digit or the glow spreading to elsewhere in the tube. I know I've seen the 50% reference somewhere else, so I'll have to dig through my library.
I'd forgotten what a comprehensive book Weston is - lots of good stuff about sputtering in there, including detailed analysis of cathode materials, their performance and lifespan with and without Hg doping... Nick -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/2e6939de-c46b-434a-960d-bf097c4ca52d%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
