Editing Particle beam (section)

===Acceleration===
{{See also|Accelerator physics|Superconducting radio frequency}}

Charged beams may be further accelerated by use of high resonant, sometimes also [[superconducting]], [[microwave cavity|microwave cavities]]. These devices accelerate particles by interaction with an [[electromagnetic field]]. Since the [[wavelength]] of hollow macroscopic, conducting devices is in the [[radio frequency]] (RF) band, the design of such cavities and other RF devices is also a part of accelerator physics.

More recently, [[plasma acceleration]] has emerged as a possibility to accelerate particles in a [[plasma (physics)|plasma]] medium, using the [[Radiant energy|electromagnetic energy]] of pulsed high-power [[laser]] systems or the [[kinetic energy]] of other charged particles. This technique is under active development, but cannot provide reliable beams of sufficient quality at present.