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Ultra heated hydrogen is used to make plasma (as in the plasma rocket, VASMIR, used by NASA).

add. But Neon is the common gas used to make the plasma in advertising signs. But any gas may be used (well almost any gas), as long as you have a sufficiently high voltage to ionize the gas.

It is normal to put a tiny amount of an easily ionizable gas in the lamp, to initiate the process. If you watch yellow sodium street lights starting up you'll see either a blue 'fore glow' (Mercury), or a red fore glow (neon).

Many metals may easily be made into a plasma, plasma is not confined to the gases.

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14y ago

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