Ion Thruster is a thrusting mechanism which is alternative to chemical propulsion used today.
This propulsion uses Lorentz force to accelerate ions.
It can be used for a huge number of purposes. Accelerating ions can provide thrust for a spaceship or satellite.
This technology is better than chemical propulsion in some ways. But, there are some limitations as well.
Once those limitations are overcome, such a rocket can be very well feasible.