Propulsion How does solar electric propulsion (ion propulsion) work?

What else uses plasma?

Plasma is being used in many high tech industries. It is used in making many microelectronic or electronic devices such as semiconductors. It can help make features on chips for computers. Plasma is also used in making transmitters for microwaves or high temperature films. It can even be used in work with minerals such as diamond, and in extracting economically valuable metals from rock.

How does DS1's engine work?
What is the difference between an ion engine and a conventional one?
What are other ion using technologies?

What is plasma?
Are ion engines radioactive?
Are ion engines nuclear?