Definition
An ionic beam is essentially the same as an ion beam: a stream of ions propelled and focused into a beam. โก The term 'ionic' simply emphasizes that the beam is composed of ions, which are atoms or molecules with an electrical charge due to an imbalance of electrons. Ionic beams are used to modify materials at the atomic level, for etching, or for performing precise analysis of surfaces. Think of it as a nanoscale sculptor's tool. It's useful in technology from semiconductors to medical implants.