Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 19 Messages in 3 Topics

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westdave

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Jan 11, 2014, 11:09:17 AM1/11/14
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what kind of gas has a green color ?

i once had a cadmium neon laser,it would not fire a beam but the tube did glow
the most fantastic color of green close to aquamarine
so try neon cadmium gas mix



 Helium-Cadmium (HeCd) 325 nm are three examples. These lasers have particularly narrow oscillation linewidths of less than 3 GHz (0.5 picometers),[4] making them candidates for use influorescence suppressed Raman spectroscopy.
    Instrument Resources of America <IRACO...@HUGHES.NET> Jan 10 08:41AM -0800  

    If you'd like other colors you can have white with Xenon filled tubes,
    and also orange and green with some of the other gas regulator tubes. Ira.
     
     
     
    On 1/10/2014 8:08 AM, John Smith wrote:
     
    "Dalibor Farný" <dal...@farny.cz> Jan 10 06:29PM +0100  

    What kind of gas produces green colour?
     
    sent from mobile phone
     
    Dalibor Farny
    www.daliborfarny.com
    Dne 10.1.2014 17:41 "Instrument Resources of America" <
     
    John Smith <mrsta...@gmail.com> Jan 10 12:55PM -0500  

    Most likely Krypton gas...usually the glass is stained to enhance the green
    color.
     
     
     
    Instrument Resources of America <IRACO...@HUGHES.NET> Jan 10 10:30AM -0800  

    Well Dalibor, now you have me wondering. Last time I actually worked
    with any VR tubes was years ago, and I swear that one of them had a
    greenish color to it. It may have been due to a 'mix" of more than one
    gas. I'm going to fire up some of the VR tubes that I have and see if I
    do remember correctly or not. Stay tuned for more. Ira.
     
     
     
    On 1/10/2014 9:29 AM, Dalibor Farný wrote:
     
    "greg...@hotmail.com" <greg...@hotmail.com> Jan 10 12:23PM -0800  

    If you want green, I suggest green glass and Xenon gas (numerous spectral
    lines in the green region), and perhaps a bit of Helium. I would avoid Neon
    because it's mostly yellow/orange/red spectra.
     
    John Smith <mrsta...@gmail.com> Jan 10 03:29PM -0500  

    The really small neon bulbs are sometimes stained to add color. On neon
    signage sometimes gas mixes are used and also various metal halides are
    mixed with the gasses. The large high voltage vacuum tube rectifiers
    usually have mercury when ionized neutralizes the space charge. The
    voltage regulator tube have neon and argon mostly.
     
     
     
    "Tidak Ada" <off...@zeelandnet.nl> Jan 10 09:39PM +0100  

    According to Wiki, Krypton should emit a violetish colour. I guess also UV.
    So maybe you have seen a krypton discharge lamp with an Uranium glass
    mantle. The green colour will be due to fluorescence evoked by the UV-light
    that excites the uranium atoms to send off green light.
     

     
    @Dalibor:
     
    Beware of uranium glass it is extreme expensive, however, may be in your
    country it might still be made (Bohemia?).
     

     
    eric
     

     
    Van: neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] Namens
    John Smith
    Verzonden: vrijdag 10 januari 2014 18:56
    Aan: neoni...@googlegroups.com
    Onderwerp: Re: [neonixie-l] Re: What to do with a 0B3 regulator tube ?
     

     
    Most likely Krypton gas...usually the glass is stained to enhance the green
    color.
     

     
    On Fri, Jan 10, 2014 at 12:29 PM, Dalibor Farný <dal...@farny.cz> wrote:
     
    What kind of gas produces green colour?
     
    sent from mobile phone
     
    Dalibor Farny
    www.daliborfarny.com
     
    Dne 10.1.2014 17:41 "Instrument Resources of America"
    <IRACO...@hughes.net> napsal(a):
     
    If you'd like other colors you can have white with Xenon filled tubes, and
    also orange and green with some of the other gas regulator tubes. Ira.
     
     
     
     
    On 1/10/2014 8:08 AM, John Smith wrote:
     
    Try some 866 high voltage rectifier tubes...more yummy purple glow....
     
    On Thursday, January 9, 2014 7:19:37 PM UTC-5, greg...@hotmail.com wrote:
     
    I acquired a few of these for free (not a bad price), and their faint
    purplish glow doesn't produce much of a "wow" factor to show-off. I was
    hoping that reverse-polarity would produce more glow; no such luck. Most of
    the interesting glowing is hidden inside the metallic area of the tube.
    Even with higher current, the glow was barely affected. It's so dim that it
    wouldn't even make a decent night-light.
     

     
    Any ideas out there ?
     

     
    Since these aren't rare tubes (yet...), I'm tempted to repeat an experiment
    I did in high school with a 0A2 regulator tube: I cranked so much current
    thru it that the plate glowed red-hot, the glass softened and due to the
    vacuum, and it shrank around the metal. Watching the poor tube shrivel-up
    and die made me laugh so hard I cried.
     
    Instrument Resources of America <IRACO...@HUGHES.NET> Jan 10 04:08PM -0800  

    Well I'm back from checking the following VR tubes in my Hickok, 0A3,
    0B3, 0C3, 0D3, and their seven pin miniature equivalents, which in
    reality I probably didn't need to check. NO green ones. I swear that I
    remember a green colored VR tube, maybe not at this point. It's heck
    gettin old, definitely not for sissies. LOL. And,,,,,,NO,,,, I'm NOT
    confusing it with the green wilamite in shadow eye tubes, (aka electron
    ray indicators). Anyone out there remember a greenish colored VR tube,
    or am I losing it? Ira.
     
     
    On 1/10/2014 9:29 AM, Dalibor Farnı wrote:
     
    Charles MacDonald <cm...@zeusprune.ca> Jan 10 07:24PM -0500  

    On 14-01-10 07:08 PM, Instrument Resources of America wrote:
    > confusing it with the green wilamite in shadow eye tubes, (aka electron
    > ray indicators). Anyone out there remember a greenish colored VR tube,
    > or am I losing it? Ira.
     
    Different makers probably used different gas mixtures to make their VR
    tubes. Neon and argon together produce a range of colours depending on
    the proportions.
     
    http://en.wikipedia.org/wiki/Gas-discharge_lamp claims that Krypton
    will give a green glow.
     
    --
    Charles MacDonald Stittsville Ontario
    cm...@zeusprune.ca Just Beyond the Fringe
    http://Charles.MacDonald.org/tubes
    No Microsoft Products were used in sending this e-mail.
     
    John Smith <mrsta...@gmail.com> Jan 10 08:01PM -0500  

    This is getting interesting...never have seen a pure green ionized gas.
    There is a possibility it may have been a hybrid gas mixture. Since Helium
    produces a pale yellow and mercury will produce a blue color...possibly it
    was a mixture of a few types of gases. Also some ionized gas will produce
    different colors at different energy (voltage ) levels. Pressure also
    enters the equation. As far as any commercial vacuum tube regulators I have
    yet to see a pure green color.
     
     
    On Fri, Jan 10, 2014 at 7:08 PM, Instrument Resources of America <
     
    NeonJohn <j...@neon-john.com> Jan 10 08:14PM -0500  

    On 01/10/2014 08:01 PM, John Smith wrote:
    > different colors at different energy (voltage ) levels. Pressure also
    > enters the equation. As far as any commercial vacuum tube regulators I have
    > yet to see a pure green color.
     
    What we neonists would give for a pure green gas! Unfortunately there
    isn't one. Krypton does a rather boring greenish tinged dull white.
    Neon has an excitation state that decays with a green photon but it's
    very hard to get it that excited without laser light. Copper ion lasers
    do a beautiful green plasma but that's not something that could be used
    for display purposes.
     
    Unfortunately for the color green, it's either colored glass or phosphor.
     
    John
     
     
    --
    John DeArmond
    Tellico Plains, Occupied TN
    http://www.fluxeon.com <-- THE source for induction heaters
    http://www.neon-john.com <-- email from here
    http://www.johndearmond.com <-- Best damned Blog on the net
    PGP key: wwwkeys.pgp.net: BCB68D77
     
    Instrument Resources of America <IRACO...@HUGHES.NET> Jan 10 05:20PM -0800  

    Or I hate to mention LED's LOL Ira.
     
     
     
     
     
    On 1/10/2014 5:14 PM, NeonJohn wrote:
     
    Instrument Resources of America <IRACO...@HUGHES.NET> Jan 10 05:34PM -0800  

    Green filters????? Ira
     
     
     
     
    On 1/10/2014 5:14 PM, NeonJohn wrote:
     
    John Laturnus <johnla...@gmail.com> Jan 10 06:09PM -0800  

    Hi everyone,
     
    I'm working on my first clock and am using ins-1 neon lamps for the dot separators.
     
    Does anyone have some advice on a mounting method? I was thinking twist in sockets would be good, but I haven't been able to find a place that sells empty sockets I could solder them into.
     
    -john
     
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