Ah, got it. So first the evacuation must take be done under much lower pressures, before filling the tube back in with the neon argon mixture. That makes sense.
So on the subject of the first question. What sort of pump would I have to be looking at? I assume High Vacuum pump is the category then? What about filling a tube with a liquid of some sort to displace the gasses and then replace the liquid with On Thursday, September 14, 2023 at 6:05:26 PM UTC-4 gregebert wrote: > From what I've researched, getters target oxygen, but I'm certain there > are other rogue agents lurking out there to ruin your neon work. > > On Thursday, September 14, 2023 at 2:47:03 PM UTC-7 Nicholas Stock wrote: > >> That is also the purpose of using a getter too right? Remove the majority >> of the gaseous impurities before back filling with neon/penning gas mixture? >> >> >> On Thu, Sep 14, 2023 at 2:41 PM gregebert <greg...@hotmail.com> wrote: >> >>> OK, that's once the tube is pressurized with the desired gas. However, >>> to cleanse the tube of impurities, it must be baked-out and evacuated to a >>> rather high vacuum. Even at a high vacuum of 1 micron, there are still an >>> extraordinary number of gas molecules present, on the order of 10^16 per >>> liter. For home-made tubes I would actually want to re-evacuate the tube a >>> second time, and refill, to get even more impurities removed. >>> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote: >>> >>>> From he Drive books archive >>>> Nixe Tube Data > NixieGas.pdf >>>> >>>> I was using the following excerpt from this book. Is it wrong or am I >>>> getting something mixed up? >>>> >>>> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote: >>>> >>>>> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 >>>>> Torr. One atmosphere of pressure is 760 Torr (760mm Hg). >>>>> I've seen neon-sign texts stating the need to get below 1 micron for >>>>> proper bombarding, and I imagine nixie tubes are similar. >>>>> >>>>> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote: >>>>> >>>>>> Look at Dalibor's videos. >>>>>> >>>>>> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com >>>>>> wrote: >>>>>> >>>>>>> Good day. >>>>>>> >>>>>>> Since we require to reach vacuums of 10 - 50 torr depending on the >>>>>>> gas mixture. What sort of vacuum pumps are we looking at sourcing to >>>>>>> achieve those levels? >>>>>>> >>>>>> -- >>> >> 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+...@googlegroups.com. >>> >> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/ea949a55-26f7-41f0-9118-7f190f9d9fafn%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/neonixie-l/ea949a55-26f7-41f0-9118-7f190f9d9fafn%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/1d24c182-0db3-44eb-8172-d6b4f76cbe2an%40googlegroups.com.
