Ion Beam Cooling by Radiation and Electron Heat Sink

The concept for transverse temperature reduction of an arbitrary species intense ion beam is investigated. In this concept a transversally hot ion beam of arbitrary species is brought into thermal contact with a cooler electron beam with a much higher line density moving at the same speed. Thermal equilibrium is established through Coulomb interaction, with the electrons acting as heat sink. The transversally cool electron beam is either initially available or obtainable by its interaction with the comoving ions through an irreversible radiative energy loss process.