Much of the radiation is blocked by the glass envelope. Therefore a source inside a tube may be much smaller than outside. eric
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Nick Sent: maandag 30 september 2013 15:50 To: [email protected] Subject: Re: [neonixie-l] Re: Otis Elevator Tube Hivac 425A2 Some years ago I tried to do some tests on this (I have some 2040s). As a general issue, nixies and neon trigger tubes also don't fire well in the dark - they utilise stray photons to help initiate ionisation. If you wanted reliable triggering, adding a small radioactive source helped greatly So, I did some ad hoc tests in the dark using uranium glass balls (very very low level of radiation - 10 - 15 microRems/hour) which showed some minor increase in repeatability of firing at a given voltage. Its an experiment I should have taken further. 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 [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/59ca842f-f187-4df2-aafe-d9cd9ea b4b36%40googlegroups.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!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAANwjxpgcaQZGgvc5zEdfS6kBAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/groups/opt_out.
