Tuneable FEM system as a plasma source for biological applications

There is increasing interest in the use of microwave power for industrial applications. A pulsed tuneable microwave source is beneficial as it allows the high electromagnetic field of a high power to be applied to a target without excessive heating. The free electron maser (FEM) is the tuneable source with ability to operate across a wide range of frequencies from 8 to 20 GHz. Using higher frequencies than the common 2.45 magnetron, increases the fields obtained and also beneficial scaling effects on some applications, such as microwave induced plasmas. The paper presents the basic principles of the FEM system as well as the applications of UV.