Andrew (11) asks “How do you make plasma?”

Andrew, quite an ‘exciting’ question. To find out how we make plasma lets look first at atoms and their structure. My team will do this and then I will come back to talk about plasma.

Andrew. I will be talking about a Neon atom. The Neon atom has 4 protons in its nucleus with 4 electrons orbiting it. Does that give you a clue to my plasma source?

The most familiar plasma sources that you might come across are Neon light tubes and lightning.

Firstly let us look at what plasma is. It is defined as a hot ionised gas which has an equal number of protons and electrons existing in the same space. Lets look at a neon light tube.

In the tube the Neon atoms lose electrons to the positive electrode, the remaining  Neon positively charged atoms (they have lost an electron) are attracted to the negative electrode. Lots of exchanges of electrons take place during this process and this ‘excites’ the electrons and creates the  plasma environment which gives of energy in terms of light.

Really hope that this helps. Please tell me if you do not understand bits of it or ask another question.

(Anyone reading this post who wants to ask a question or make a comment please feel free to do so)


Edited 11/10/2017 Pictorial representation in image changed to ‘drawing’. Text size on image changed.

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