How is plasma controlled?

Question

If plasma (4th stage of matter) can be controlled by thermo, magnetic or electro fields, just what are examples of how it's done by/with each?

I'm trying to understand practical (even theoretical) applications for plasma but with a little bit of a layman's explanation. Not just the "what" but a brief explanation of the "how."

I'm also wanting examples in labs or controlled environments, not outer space. Thanks!

Answer 1

Well most plasmoids are charged, since they are ionic in nature, allowing for fairly easy control via electromagnetic fields.

Easiest practical example is a plasma torch (also called a plasma cutter) used in the steel industry. A VERY powerful electric arc is created at the front end of a nozzle through which a very powerful jet of air runs. The high energy turns the air into plasma which can then be used to cut through solid steel like a knife through butter

Answer 2

Hi. Mytraver is correct. The only force I've heard of is magnetic because if plasma contacts a surface it collapses back to a gas because of temperature reduction.