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Suitable Container Materials for Plasma

  1. Jan 18, 2014 #1
    Hi everyone,

    This is my first post here, so go easy on me. :)

    I am looking towards investigating the properties of plasma antennas, where a plasma is created in a sealed container, and the RF signal is either capacitively or inductively coupled and the transmitted.

    However, I am wanting to try a spherical shaped object. I would need to be able to pass two electrodes through opposite poles of the sphere, in order to create the plasma.

    However, I cannot seem to find any glassware which suits the bill. The closest object I can find is something called a chromatography reservoir, as below:

    However, the necks on these are a bit small in diameter.

    I was wondering if it might be possible to use a material other than glass?

    Or perhaps someone might know of the correct name of the piece.

    Many thanks for your help in advanced, everyone.

  2. jcsd
  3. Jan 19, 2014 #2


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    Staff Emeritus
    Science Advisor

    If one wishes to make a plasma and observe it from the outside, then the vessel probably needs to be ceramic (e.g., glass). Depending on the gas, one could use a two or three neck flask. What gas is one planning on using.

    One could look at discharge lamps, e.g., those already filled with a particular gas, for examples.

    Inductively coupled plasmas (ICP) are used for material analysis through optical spectroscopy. That is another example.
  4. Jan 19, 2014 #3
    Many thanks for your reply, Astronuc.

    I intend on using Helium.

    I am also attempting to create the diffused sort of plasma, rather than the filament type. Will having the electrodes close together (in a two necked flask) affect this?

    Many thanks again,

  5. Jan 19, 2014 #4
    Also, thanks to the admin/mod who moved this to a more appropriate forum. :)
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