Suitable Container Materials for Plasma

[Smithy16]

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.

Smithy

 

[Astronuc]

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.

 

[Smithy16]

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,

Smithy

 

[Smithy16]

Also, thanks to the admin/mod who moved this to a more appropriate forum. :)