How do electric propulsion systems, like ion thrusters, achieve extremely high exhaust velocities?

Answer

By using powerful electric fields to accelerate ionized propellant particles.

Ion thrusters function by ionizing a propellant, such as xenon gas, and then employing intense electric fields to accelerate these charged particles to very high speeds out of the engine.

How do electric propulsion systems, like ion thrusters, achieve extremely high exhaust velocities?
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