On 03/12/2017 03:41 PM, SWISSNIXIE - Jonathan F. wrote:
> It has a half life of nearly 11 Years, this means if the tube is 30 years > old, today only 12.5% of its radioactive gas is still active. > The only way Kr-85 *could* affect your health is when you drop the tube and > inhale the gas. Nixie tubes contained about 1uCi of Kr-85 when new. That quantity of gas absolutely positively without question or doubt poses NO, NONE, NADDA risk to humans. I'm a retired nuclear engineer whose specialty is dealing with very large amounts of radiation and radioactive materials. Like 10,000 Ci of Kr-85 at a time. So I have some experience in this area. BTW, for anyone making glow discharge tubes (Dalbor!), custom gas mixtures including Kr-85 as a component can be purchased here http://www.specgasinc.com/ They're great to deal with and don't mind dealing with small customers. John -- John DeArmond Tellico Plains, Occupied TN http://www.tnduction.com <-- THE source for induction heaters http://www.neon-john.com <-- email from here http://www.johndearmond.com <-- Best damned Blog on the net PGP key: wwwkeys.pgp.net: BCB68D77 -- 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/c320c7a6-0802-4d8a-fe85-7c600993b40f%40neon-john.com. For more options, visit https://groups.google.com/d/optout.
