The main regularities of core-halo formation in space charge-dominated ion beam

The laws that govern the charge redistribution in space charge dominated (SCD) beam during its transport is considered. Physical mechanisms of halo production and establishment of steady distribution inside core for matched beams are described. The image-based computer codes were generated and charge density redistribution process in the beam with concurrent phenomena was described. The main regularities of SCD-beam transport were carried out. A high-density core and low-density halo with particle active interchange are established in every case. Most of core particles are “exhalo” or “coming-halo” ones which income from halo in previous instant of time or will emerge from core in next instant of time. Final steady states are ones with a Coulomb field of minimal potential energy. The transition from the SCD-beam initial state into a final steady state is accompanied by particle kinetic energy increase and emittance growth. A steady state with constant transverse sizes of core can be established. Such a beam state would be nominated as matched one