Inhomogeneities in beams extracted from ECR ION sources

An examination of heavy ion beam profiles using viewing targets and CCD cameras at both the NSCL and GSI shows highly structured patterns. These structures generally have a 3-fold symmetry reflecting the highly- magnetized nature of the ion formation within the plasma chamber. A program of experiment and modeling with KOBRA3-INP [1], TRANSPORT [2], GICOSY [3] is continuing. Results of this program to date are discussed.