Acknowledged as the "founding father" of and world renowned expert on electron cyclotron resonance sources Richard Geller has produced a unique book devoted to the physics and technicalities of electron cyclotron resonance sources. Electron Cyclotron Resonance Ion Sources and ECR Plasmas provides a primer on electron cyclotron phenomena in ion sources as well as being a reference to the field of ion source developments. Coverage includes elements of plasma physics, specific electron cyclotron resonance physics, and the relevant technology directed at both scientists and engineers.