But Ra228 will be more efficient in this case, for it is a ß-radiator. However, it only has an half life of 69 months.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Rehwinkel Sent: maandag 10 februari 2014 15:16 To: [email protected] Subject: Re: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,, > Hivac used to add a little to some of their tubes - I learned this 40 years ago from one of their R&D engineers. Actually I wasn't sure if it was Kr85 or Radon, but radon has a shorter half life. Somehow I doubt it was radon, which has a half-life on the order of 4 days. Kr85 has a half life of around 10 years. I suppose you could mean radium, which was used in a variety of tubes, but the most common isotope (Ra226) has a half life of 1600 years or so. - John -- 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/5F6BF278-BC37-4FA7-8CC5-2D914AB FCABA%40mac.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAALLrj8bj4vJAlJ/8j73qZ40BAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/groups/opt_out.
