Nick, may be you find useful UV LED's here: [ http://www.roithner-laser.com/ ] However, consider the price rises exponential with the inverse of the wave length of the UV. Does ordinary black light work? Or aquarium water sterilization lamps, but use the latter only in a light tight case Another source could be a mercury rectifier with an open system like 866's, but the power consumption of the tube make makes them valueless. eric
_____ From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of Nick Sent: maandag 10 februari 2014 11:11 To: neonixie-l@googlegroups.com Subject: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,, Some time ago I was playing with XC18s (bought a large number many years ago when they were very cheap) - they have a similar problem so I experimented with uranium marbles and UV LEDs... I wasn't very "quantitative", but from a qualitative standpoint, the marbles made no difference and at that time so-called "UV" LEDs didn't seem to have much UV content - more just purple... Maybe things have improved since then and UV LEDs are a possible answer. All you need is a good source of high energy photons to initiate ionisation... 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/b5d1368c-90e0-43c6-be93-724e3de d4ef8%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 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/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAAOsm8gEZ1CJNppiOfBaxg2UBAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/groups/opt_out.