About the author : Dalibor

Finally! I saw a neon glowing today, first time in my system! I filled the tube first on 1 torr with argon, then to 32 torr with neon, so the ratio is 1:31 = 97% neon and 3% argon. The glow doesn’t cover whole digit, the shape of electrodes is not perfectly parallel and there is just a back plate as the anode, so the electric field is not homogenous. So I have now reliable gas filling manifold. From now on, I am going to play with glass and make some “lab samples” ;-)

I unfortunately drop my glow tube on the ground and the valve broke out.. So I just weld a tube onto it and use it without it, what a pitty :-(

3 Comments

  1. Jakub Čepela February 23, 2013 at 22:31

    Pěkné!

  2. Anders M March 31, 2013 at 20:56

    Very nice. Where did you buy the Neon?

    • Dalibor March 31, 2013 at 21:02

      Hello Anders,

      I bought in a local shop with equipment for neon sign makers. It is 4.7 (or so) purity, costs around 50 eur for 12 atmospheric liters (in 1 liter can pressed to 12 bars).

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